The 'Born in the USA' singer went on an anti-Trump tirade, and Kid Rock responded. So did President Trump. Here's what to know.

The 20-time Grammy winner recently opened his Land of Hope and Dreams tour by asking fans to "raise your voices against the authoritarianism and let freedom ring."

As for Springsteen, “Never liked him, never liked his music, or his Radical Left Politics and, importantly, he’s not a talented guy,” Trump continued. “Just a pushy, obnoxious JERK, who fervently supported Crooked Joe Biden, a mentally incompetent FOOL, and our WORST EVER President, who came close to destroying our Country.”