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Former Illinois Congressman Joe Walsh said “This is now war” and called for President Obama to “watch out” in a Twitter post after the shootings in Dallas that left five officers dead.

“This is now war. Watch out Obama. Watch out black lives matter punks. Real America is coming after you,” he wrote in the Twitter post.

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Walsh later deleted the tweet and posted a new tweet saying “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.”

A total of 11 officers were shot in Dallas, 5 fatally, and some of the six officers injured are undergoing surgery, authorities said.

It was the deadliest single attack on law enforcement since the 2001 terror attacks, when 72 officers died, according to the National Law Enforcement Officers Memorial Fund.

Walsh left up several more controversial tweets: