Live Dallas video 2 snipers shoot 10 police officers (reported) http://dfw.cbslocal.com/show/cbs-11-live-video/ so sorry to see! .. 3 Police Officers Dead After Shooting in Downtown Dallas By NBC 5 Staff with video .. http://www.nbcdfw.com/news/local/Protests-in-Dallas-Over-Alton-Sterling-Death-385784431.html .. it was a very peaceful rally until...