'Avenger' retreats on Trump after racial backlash

Actor Anthony Mackie prepares for his role in "Captain America: Civil War," which opens May 6, 2016 (Photo: Twitter, Anthony Mackie)

The world's greatest Marvel superheroes can do just about anything – except endorse a Republican.

Actor and "Avenger" Anthony Mackie told BET on Monday he was drinking Trump's "Kool-Aid." It only took hours before he was forced to frame his comments as "a bad attempt at a joke."

Mackie, who plays Captain America's ally, Falcon, immediately faced backlash after saying, "I would 100 percent want to run Trump's campaign. 100 percent. ... When you look at Trump, he's an easy sell because you can sell him as the guy who worked his way up from nothing. And I think if you're a 'pull yourself up by your bootstraps' candidate, people would identify with that."

Ira Madison, staff editor for New York Magazine, unleashed a racial insult after the actor's BET interview.

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"Anthony Mackie always looks like he’d love to get called a n----r in a Quentin Tarantino movie," said Madison.

"Ever notice how you never see Anthony Mackie and [conservative pundit] Stacey Dash in the same place at the same time," Twitter user David F Walker added.

The actor was also called a "house Negro," along with other assorted insults, Breitbart News reported Monday.

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"Sorry Donald, that wasn't an endorsement. Just a bad attempt at a joke, I guess?" Mackie tweeted Monday as the social-media bombardment intensified.

Mackie received similar criticism in January when he said the movie "Selma" disappointed at the Oscars because Americans are "just tired of being bombarded with race right now," Breitbart reported.