Kenyan opposition leader Raila Odinga gestures to thousands of supporters gathered in the Mathare slum of Nairobi, Kenya Sunday, Aug. 13, 2017. Odinga on Sunday condemned police killings of rioters during protests after the country's disputed election and is urging supporters to skip work Monday. (AP Photo/Ben Curtis)

A passerby stumbles to the ground as she and opposition supporters, protesting over the upcoming elections, run for safety amid a cloud of tear gas fired by riot police in downtown Nairobi, Kenya Monday, Oct. 16, 2017. Two international human rights groups said Monday that Kenya's police in August attacked opposition supporters killing dozens and injuring scores following demonstrations protesting President Uhuru Kenyatta's subsequently annulled re-election. (AP Photo/Ben Curtis)

Jubilant supporters of Kenya's President Uhuru Kenyatta march past the Supreme Court, after it failed to reach quorum to hear a petition calling for a halt in the presidential election, in downtown Nairobi, Kenya Wednesday, Oct. 25, 2017. The chief justice of Kenya's Supreme Court says the court cannot hear a last-minute petition to postpone Thursday's presidential election because it does not have a quorum of judges. (AP Photo/Ben Curtis)

Riot police advance towards protesters past burning barricades, during clashes between police and protesters in the Mathare slum of Nairobi, Kenya Saturday, Aug. 12, 2017. Kenyan police opened fire to disperse opposition protesters throwing rocks who had blocked roads with burning barricades, a day after President Uhuru Kenyatta was declared the winner of Kenya's hard-fought presidential election. (AP Photo/Ben Curtis)

EDS NOTE: GRAPHIC CONTENT. Residents hold their hands up in the air towards police, as a man genuflects, right, next to the body of a man who had been shot in the head and who the crowd claimed had been shot by police, in the Mathare slum of Nairobi, Kenya Wednesday, Aug. 9, 2017. Kenya's election took an ominous turn on Wednesday as violent protests erupted in the capital. (AP Photo/Ben Curtis)

A relative wails on the floor of an alleyway near to the body of a man who had been shot in the head and who the crowd claimed had been shot by police, as the angry crowd shouts towards the police, in the Mathare slum of Nairobi, Kenya Wednesday, Aug. 9, 2017. Kenya's election took an ominous turn on Wednesday as violent protests erupted in the capital. (AP Photo/Ben Curtis)

Opposition protesters taunt riot police to come and get them, as they stand behind a burning barricade during clashes with police in the Mathare slum of Nairobi, Kenya Thursday, Oct. 26, 2017. Opposition supporters boycotted Thursday's rerun of Kenya's disputed presidential election, clashing with police in some parts of the East African country and forcing authorities to postpone voting in areas affected by the violence. (AP Photo/Ben Curtis)

Residents look out from their balconies during clashes between police and protesters in the Mathare slum of Nairobi, Kenya Saturday, Aug. 12, 2017. Kenyan police opened fire to disperse opposition protesters throwing rocks who had blocked roads with burning barricades, a day after President Uhuru Kenyatta was declared the winner of Kenya's hard-fought presidential election. (AP Photo/Ben Curtis)

A man brandishing a "panga" machete challenges police, as he runs next to a burning barricade, during clashes between police and protesters in the Mathare slum of Nairobi, Kenya Saturday, Aug. 12, 2017. Kenyan police opened fire to disperse opposition protesters throwing rocks who had blocked roads with burning barricades, a day after President Uhuru Kenyatta was declared the winner of Kenya's hard-fought presidential election. (AP Photo/Ben Curtis)

Residents look out from their balconies as the flames from a burning barricade rise up during clashes between opposition protesters and police after the election result was announced, in the Mathare slum of Nairobi, Kenya Monday, Oct. 30, 2017. Clashes erupted after Kenya's election commission said President Uhuru Kenyatta had won the election that was boycotted by the main opposition group. (AP Photo/Ben Curtis)

Kenya's President Uhuru Kenyatta, seen reflected in the hood of the presidential vehicle in which he is standing, addresses his supporters on a street in Ongata Rongai, on the outskirts of Nairobi, Kenya Tuesday, Sept. 5, 2017. Kenya faces an Oct. 17 vote after the Supreme Court nullified Kenyatta's re-election but opposition leader Raila Odinga said Tuesday he does not accept the date, demanding reforms to the electoral commission and other "legal and constitutional guarantees." (AP Photo/Ben Curtis)

A man seeking safety walks with his hands in the air through a thick cloud of tear gas towards riot police, as they clash with protesters throwing rocks in the Kawangware slum of Nairobi, Kenya Thursday, Aug. 10, 2017. International observers on Thursday urged Kenyans to be patient as they awaited final election results following opposition allegations of vote-rigging, but clashes between police and protesters again erupted in Nairobi. (AP Photo/Ben Curtis)