A Kenya Administration police officer holding a stick monitors access to a polling station at Kariokor Community Centre in Nairobi on August 8, 2017 during general elections. Kenyans were voting on August 8 in elections headlined by a knife-edge between Uhuru Kenyatta and Raila Odinga.

Supporters of the Kenyan opposition presidential candidate shout and hold sticks during a protest in the Mathare slums of Nairobi on August 9, 2017, a day after the presidential election. Kenyan politics is characterised by inter-ethnic tensions.

A man seriously affected by tear gas and allegedly beaten up by police officers lays on the ground with handcuffs on after being arrested in Uhuru Park, Nairobi on October 13, 2017 during street protests by opposition supporters to call for the resignation of the Independent Electoral Commission.

Kenyan police arrive to break up a protest of supporters of the Kenyan opposition presidential candidate in the Mathare slums of Nairobi on August 9, 2017, a day after the presidential election. Kenyan politics is characterised by inter-ethnic tensions.

An opposition supporter reacts in front a burning barrricade in Mathare, Nairobi on October 26, 2017, as a group of demonstrators attempted to prevent voters from accessing a polling station in presidential elections. Kenyan politics is characterised by inter-ethnic tensions.

A Kenyan policeman check a street with a burning barricade in Mathare, Nairobi on October 26, 2017, as a group of demonstrators attempted to prevent voters from accessing a polling station in presidential elections. Kenyan politics is characterised by inter-ethnic tensions.

A woman reacts as she passes Kenyan police troops during a protest by supporters of the NASA presidential candidate on August 11th, 2017 at the Mathare slum of Nairobi, a stronghold of Kenyan opposition leader. Kenyan elections were marred by deadly riots, violent protests, killings and beatings.

Relatives surround the body of Stephanie Moraa (9) allegedly killed by gunshot injury in the balcony of his house at Mathare slums in Nairobi on August 12, 2017. The nine-year-old girl's family said she had been shot while watching the riots from a fourth floor balcony.

An opposition supporter carries a stone on her head under the heavy rain in front a burning barrricade in Mathare, Nairobi on October 26, 2017, as a group of demonstrators attempted to prevent voters from accessing a polling station in presidential elections.

An injured man who allegedly was shot by Kenyan police during a rally of opposition supporters is helped by other people in Muthurwa State, Nairobi, on November 17, 2017. At least three men were shot dead on November 17, 2017 in the Kenyan capital Nairobi as police broke up crowds of protesters

A man, belonging to the Luo tribe, lays motionless on the ground after being beaten by the mob in a Kikuyu tribe area on August 13, 2017 during violent clashes between Luo supporters of defeated opposition leader Raila Odinga and members of President Uhuru Kenyatta's Kikuyu ethnic group.

Winfred Nzunga (8), allegedly hit in the head by a tear gas canister shot by Kenyan police officers during the post-electoral turmoil, stands nearby her home located at the Mathare slums in Nairobi, Kenya on August, 15th, 2017. Kenyan politics is characterised by inter-ethnic tensions.