Chris Schaefer was sitting in a church pew at a meeting Thursday night when those around him gradually eased away. Seconds later, he was lying on the ground outside as five men attacked him. The meeting was a gathering of Ferguson-based protesters and the agenda was how to conduct future demonstrations. When Schaefer — a senior at the University of Missouri, St. Louis — arrived, he was told he couldn’t live video stream the meeting. The rule struck him as “suspicious,” but in a conversation with BuzzFeed News Friday he said he sat down and obeyed it anyway. And for...