democrat motto never let opportunity go waste hours black live matter massacre thugs get face grieve cop call scene 7-eleven store reportedly loot watch twitter users share video location disgust blm thugs flash gang sign laugh dance officer mournshare trash pic.twitter.com/x47myf3nmz trump guy thattrumpguy july 2016this brave witness tell truth dallas black live matter protest media try present public peaceful protest may true protest mostly peaceful angry violent protesters put everyone safety jeopardy hey black live matter protest cop violence without protesters become violent else cop send protect defend right free speech h/t breitbart news watch black live matter thugs loot 7-eleven store cop shootings…taunt make obscene gesture grieve dallas police officer