“Avengers” star Chris Evans slammed President Donald Trump this week for writing a series of racist tweets attacking progressive Democratic lawmakers.

On Sunday, Trump told several women of color serving in Congress to “go back” to their own countries and has since doubled down on those comments.

“This is racist, Biff,” Evans wrote on Twitter, referring to Trump with the name of the “Back to the Future” bully.

Then, Evans called out the president for “wielding hate and racism” to manipulate his supporters, writing: