Sounds like people who know precision shooting long guns. Perhaps military trained? Perhaps a type of blowback from government-trained killers?
This is first video of shooting. This clip qill.go viral in minutes. pic.twitter.com/i5mYIoQO1R— nycphotog (@nycphotog) July 8, 2016
More details here.
Second video; Copper killed.
Witness Ismael Dejesus joins @donlemon to share the video he captured of the #Dallas shooting https://t.co/oBmEIv09rk— CNN (@CNN) July 8, 2016
12 officers, 2 civilians were shot during last night's protest march. 5 dead.