Dallas Police Practice Riot Control Ahead of Donald Trump Visit

Dallas police staged demonstration and riot drills Wednesday at Fair Park, the day before a large demonstration is planned against presumptive Republican presidential nominee Donald Trump.

About 600 Dallas officers participated in the training with riot helmets and shields. There was smoke to simulate tear gas and scores of police recruits playing the role of unruly demonstrators, all of it in hot weather conditions similar to what the officers could face.