Plain cloth policemen arrest youths during the walk to work protests in Kasangati suburb near Uganda's capital kampala October 18, 2011. Ugandan opposition leader Kizza Besigye was briefly arrested on Tuesday as he took part in a "walk-to-work" protest against surging consumer prices and wasteful government spending on the outskirts of the capital Kampala, his party said.

A supporter of Uganda's main opposition leader Kizza Besigye is arrested by policemen during a "walk-to-work" protest in Kasangati suburb near Uganda's capital Kampala October 18, 2011. Ugandan police briefly arrested Besigye on Tuesday and said they would charge 15 protesters with treason in an effort to quell demonstrations against rising prices.

Uganda's main opposition leader Kizza Besigye (3rd L) and his supporters are blocked by policemen during a "walk-to-work" protest in Kasangati suburb near Uganda's capital Kampala October 18, 2011.