Trump gunman researched previous mass shooter Ethan Crumbley and his f… CNN 0 103 07.20 00:36 https://www.youtube.com/watch?v=OSEEQk5l-a4 + 63 https://www.youtube.com/feeds/videos.xml?channel_id=UCupvZG-5ko_eiXAup… + 14 Trump gunman researched previous mass shooter Ethan Crumbley and his family