KAMPALA, Uganda—Ugandan opposition figure Bobi Wine was arrested Monday while leading a protest against the detention of many of his supporters in the aftermath of a presidential election. Police arrested Wine near a public square in the capital and then drove him back to his home outside Kampala. “His home is now surrounded by police and the military,” said Wine’s Twitter account. The Daily Monitor newspaper published a photo of Wine being taken away by police while he held a poster saying “BRING BACK OUR PEOPLE.” “Don’t fight,” Wine told his supporters when armed police grabbed him and his associates while a charging crowd in the background repeatedly shouted his name, according to footage from the scene in downtown Kampala. “Don’t give them a reason.” Wine has called on authorities to free hundreds of his supporters arrested before, during, and after January’s presidential election in which he challenged longtime leader …