Over the weekend, three police officers were killed during an ambush by a single gunman armed with an AR-15 style semi-automatic weapon.

+ Darrel W. Stephens, the executive director of the Major Cities Chiefs Association: “We’ve seen nothing like this at all. The average officer in America, who was tense anyway, their tension and vigilance is going to increase even more. Police officers have always been vulnerable, and they know it. But somewhere inside you, you didn’t think it would happen. But now we’re seeing it happen.”

+ An excerpt from Montrell Jackson’s Facebook post following the Alton Sterling killing: “I swear to God I love this city, but I wonder if the city loves me in uniform. I get nasty, hateful looks and out of uniform some consider me a threat. I’ve experienced so much in my short life in these last three days have tested me to the core.” Jackson was the father of a 4-month-old baby.