Protests erupted outside of the East Pittsburgh Police station over a 17-year-old boy shot and killed by a police officer late Tuesday as he ran from a traffic stop related to a separate shooting. The gathering for Antwon Rose, which spread across social media with photos and video, saw demonstrators praying, chanting, marching and calling for an end to violence and police brutality, KDKA reported. One video, as The Tribune-Review reported, showed a cop car trying to push through the crowd; others showed protesters linking arms as well as shouting for justice.The protests continued even after heavy rain swept through...