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A Kenyan student is detained by riot police after surrendering in order to escape from a tear-gas-filled building inside Nairobi University's main campus in downtown Nairobi, Kenya Tuesday, May 20, 2014. Kenyan university students on Tuesday carried out demonstrations over a proposed increase in student fees, but the protests quickly turned into hours of running battles between students throwing rocks and security forces firing tear gas, before riot police chased the students inside their campus and cornered them in a building into which they fired dozens of tear gas grenades and for a while prevented anyone from leaving. (AP Photo/Ben Curtis) ( Kenya Student Protests )

Kenyan students and bystanders run as riot police arrive to disperse protests in downtown Nairobi, Kenya Tuesday, May 20, 2014. Kenyan university students on Tuesday carried out demonstrations over a proposed increase in student fees, but the protests quickly turned into hours of running battles between students throwing rocks and security forces firing tear gas, before riot police chased the students inside their campus and cornered them in a building into which they fired dozens of tear gas grenades and for a while prevented anyone from leaving. (AP Photo/Ben Curtis) ( Kenya Student Protests )

Riot police beat students or members of university staff with clubs as they surrender to escape from a tear-gas-filled building inside Nairobi University's main campus in downtown Nairobi, Kenya Tuesday, May 20, 2014. Kenyan university students on Tuesday carried out demonstrations over a proposed increase in student fees, but the protests quickly turned into hours of running battles between students throwing rocks and security forces firing tear gas, before riot police chased the students inside their campus and cornered them in a building into which they fired dozens of tear gas grenades and for a while prevented anyone from leaving. (AP Photo/Ben Curtis) ( Kenya Student Protests )

Riot police charge past a burning barricade as they engage in running battles with protesting Kenyan students on the highway next to Nairobi University's main campus in downtown Nairobi, Kenya Tuesday, May 20, 2014. Kenyan university students on Tuesday carried out demonstrations over a proposed increase in student fees, but the protests quickly turned into hours of running battles between students throwing rocks and security forces firing tear gas, before riot police chased the students inside their campus and cornered them in a building into which they fired dozens of tear gas grenades and for a while prevented anyone from leaving. (AP Photo/Ben Curtis) ( APTOPIX Kenya Student Protests )

Students throwing rocks taunt riot police firing tear gas as they engage in running battles on the highway next to Nairobi University's main campus in downtown Nairobi, Kenya Tuesday, May 20, 2014. Kenyan university students on Tuesday carried out demonstrations over a proposed increase in student fees, but the protests quickly turned into hours of running battles between students throwing rocks and security forces firing tear gas, before riot police chased the students inside their campus and cornered them in a building into which they fired dozens of tear gas grenades and for a while prevented anyone from leaving. (AP Photo/Ben Curtis) ( Kenya Student Protests )

A student carrying a makeshift shield throws rocks at riot police as they engage in running battles on the highway next to Nairobi University's main campus in downtown Nairobi, Kenya Tuesday, May 20, 2014. Kenyan university students on Tuesday carried out demonstrations over a proposed increase in student fees, but the protests quickly turned into hours of running battles between students throwing rocks and security forces firing tear gas, before riot police chased the students inside their campus and cornered them in a building into which they fired dozens of tear gas grenades and for a while prevented anyone from leaving. (AP Photo/Ben Curtis) ( Kenya Student Protests )

Kenyan riot police fire tear gas at students outside Nairobi University on May 20, 2014. The students were protesting against a controversial fee increment which ended in a riot with tear gas fired and riot police forcing their way inside the university to arrest students after rocks were thrown. CARL DE SOUZA/AFP/Getty Images ( 529956598 )

Kenyan riot police fire tear gas at students outside Nairobi University on May 20, 2014. The students were protesting against a controversial fee increment which ended in a riot with tear gas fired and riot police forcing their way inside the university to arrest students after rocks were thrown. CARL DE SOUZA/AFP/Getty Images ( 529956709 )

A student or member of university staff tries to escape from a tear-gas-filled building, before being chased back inside by riot police, inside Nairobi University's main campus in downtown Nairobi, Kenya, Tuesday, May 20, 2014. Kenyan university students on Tuesday carried out demonstrations over a proposed increase in student fees, but the protests quickly turned into hours of running battles between students throwing rocks and security forces firing tear gas, before riot police chased the students inside their campus and cornered them in a building into which they fired dozens of tear gas grenades and for a while prevented anyone from leaving. (AP Photo/Ben Curtis) ( APTOPIX Kenya Student Protests )

A student or member of university staff overcome by tear gas holds a cloth to her face as she tries to escape from a tear-gas-filled building inside Nairobi University's main campus in downtown Nairobi, Kenya Tuesday, May 20, 2014. Kenyan university students on Tuesday carried out demonstrations over a proposed increase in student fees, but the protests quickly turned into hours of running battles between students throwing rocks and security forces firing tear gas, before riot police chased the students inside their campus and cornered them in a building into which they fired dozens of tear gas grenades and for a while prevented anyone from leaving. (AP Photo/Ben Curtis) ( Kenya Student Protests )

Students try to flee Kenyan riot police in Nairobi University on May 20, 2014. The students were protesting against a controversial fee increment which ended in a riot with tear gas fired and riot police forcing their way inside the university to arrest students after rocks were thrown. CARL DE SOUZA/AFP/Getty Images ( 529955867 )

Kenyan riot police clash with students inside a classroom in Nairobi University on May 20, 2014. The students were protesting against a controversial fee increment which ended in a riot with tear gas fired and riot police forcing their way inside the university to arrest students after rocks were thrown. CARL DE SOUZA/AFP/Getty Images ( 529955668 )

A student or member of university staff overcome by tear gas holds a cloth to her face and puts her hands in the air as she tries to escape from a tear-gas-filled building inside Nairobi University's main campus in downtown Nairobi, Kenya Tuesday, May 20, 2014. Kenyan university students on Tuesday carried out demonstrations over a proposed increase in student fees, but the protests quickly turned into hours of running battles between students throwing rocks and security forces firing tear gas, before riot police chased the students inside their campus and cornered them in a building into which they fired dozens of tear gas grenades and for a while prevented anyone from leaving. (AP Photo/Ben Curtis) ( Kenya Student Protests )

Kenyan female students plead their innocence and beg not to be beaten by a riot policeman as they leave from a tear-gas-filled building inside Nairobi University's main campus in downtown Nairobi, Kenya Tuesday, May 20, 2014. Kenyan university students on Tuesday carried out demonstrations over a proposed increase in student fees, but the protests quickly turned into hours of running battles between students throwing rocks and security forces firing tear gas, before riot police chased the students inside their campus and cornered them in a building into which they fired dozens of tear gas grenades and for a while prevented anyone from leaving. (AP Photo/Ben Curtis) ( Kenya Student Protests )

A Kenyan student with an injured leg lies in front of a group of other detained students after they surrendered to riot police in order to escape from a tear-gas-filled building inside Nairobi University's main campus in downtown Nairobi, Kenya Tuesday, May 20, 2014. Kenyan university students on Tuesday carried out demonstrations over a proposed increase in student fees, but the protests quickly turned into hours of running battles between students throwing rocks and security forces firing tear gas, before riot police chased the students inside their campus and cornered them in a building into which they fired dozens of tear gas grenades and for a while prevented anyone from leaving. (AP Photo/Ben Curtis) ( Kenya Student Protests )

Students leave a building in Nairobi University after Kenyan riot police threw in tear gas canisters on May 20, 2014. The students were demonstrating against a controversial fee increment which ended in a riot with tear gas fired and riot police forcing their way inside the university to arrest students after rocks were thrown. CARL DE SOUZA/AFP/Getty Images ( 529960195 )

A Kenyan man holds his bleeding head helped by two women after clashes with riot police on May 20, 2014 in Nairobi. Over 100 people were arrested in the Kenyan capital on May 20, police said, as student protests over a fee increase descended into running battles with riot police. The demonstrations were largely peaceful in the morning but quickly turned violent as the huge crowd of students from various universities disrupted traffic and robbed several motorists. John Muchucha/AFP/Getty Images ( 529962752 )