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Ugandan police officers stand guard outside the house of Uganda's main opposition leader Kizza Besigye home on February 22, 2016 in Kasangati, suburb of Kampala. Uganda's main opposition leader was taken by police on February 22, 2016 to a city police station from his home where he has been under house arrest since February 19. Kizza Besigye has rejected the results of February 18 election won by veteran President Yoweri Museveni, and called on his supporters to join a protest march on February 22. / AFP / Isaac Kasamani (Photo credit should read ISAAC KASAMANI/AFP/Getty Images)

Ugandan police officers stand guard outside the house of Uganda's main opposition leader Kizza Besigye home on February 22, 2016 in Kasangati, suburb of Kampala.  
Uganda's main opposition leader was taken by police on February 22, 2016 to a city police station from his home where he has been under house arrest since February 19. Kizza Besigye has rejected the results of February 18 election won by veteran President Yoweri Museveni, and called on his supporters to join a protest march on February 22.    / AFP / Isaac Kasamani        (Photo credit should read ISAAC KASAMANI/AFP/Getty Images)