'The Violence has to stop' Doctor who treated the Dallas cops breaks down into tears

Dr. Brian H. Williams, a trauma surgeon at Parkland Memorial Hospital in Dallas, was on duty last Thursday night when wounded police officers began to arrive in the ER.

Speaking to CNN's Don Lemon Monday night, he said that the experience has affected him deeply and was like "this bad movie on an endless loop."

He added: "Going to work has forced me to kind of push it aside temporarily but it continues to break through.

"I'm thinking about the officers and their families and the men that were killed in Baton Rouge and Minnesota last week and I compare my situation to theirs and it's hard for me to focus on myself right now."

Visibly upset, he told Lemon: "I don't understand why people think its OK to kill police officers. I don't understand why black men die in custody and they're forgotten the next day. I don't know why this has to be us against them. This is all really... it has to stop.

"We are all in this together, we are all connected. All this violence, all this hatred, all these disagreements, it impacts us all, whether you realize it or not. This is not the kind of world we want to leave for our children. Something has to be done."

Williams tells CNN the incident has "absolutely" changed him.

"I work with (law enforcement) on a daily basis; they're my colleagues, they're my friends, and I respect what they do. But I also understand how men like me can fear and distrust officers in uniform.

"I get it, but that does not justify inciting violence against police officers. It does not justify trying to kill police officers. This incident didn't fix anything; it's making it worse."