In many instances, tragedy can bring out the best in people. Hundreds came together to help strangers after the mass shooting in Orlando last month, and volunteers came from neighboring states to help clean up in West Virginia after floods ravaged the state.
At a predominately peaceful Black Lives Matter protest in Dallas on Thursday, a horrifying shooting carried out by currently unidentified snipers claimed the lives of four police officers.
As the situation was still unfolding in Dallas Thursday night and reports were pouring in of police officers who had been injured or killed, the anti-cop rhetoric hit a disturbing high on Twitter.
Here are 14 of the worst examples…