A quiet street in Burundi's capital can change in an instant. In recent months, antigovernment protesters in this tiny, east African country have developed a flash mob approach to demonstrations, rapidly convening and dispersing. An hour later, all that's left are shuttered kiosks, tossed bricks and the odor of burned tires in the air.
Activists are taking this approach because they say at least 70 people have been killed in protests in the past two months.