On July 7, 2016, the night of the shooting deaths of five Dallas police officers, Walsh wrote on Twitter, "This is now war. Watch out Obama. Watch out Black Lives Matter punks. Real America is coming after you." These comments were interpreted by some as threats. After deleting the tweet (by his account it was deleted by Twitter), Walsh wrote later, "I wasn't calling for violence, against Obama or anyone. Obama's words and BLM's deeds have gotten cops killed. Time for us to defend our cops." The next morning, Walsh stated in an interview with the "Chicago Tribune" that Twitter suspended his account and deleted the tweet itself: "The pre-condition for me reopening my account was they had to delete that tweet." He said, "Of course I didn't mean 'let's go kill Obama and Black Lives Matter.' I was not trying to incite violence against Obama and Black Lives Matter. That's crazy and stupid and wrong. It would end my career and it's wrong." Rep. Keith Ellison also called for the investigation of Walsh following the tweet.