Former Mexican President Vicente Fox lashed out at President Trump Monday for his late condemnation of hate groups linked to Saturday's violence in Charlottesville by tweeting a photo of Trump with a Nazi swastika superimposed on his forehead.

".@realDonaldTrump knowing that you like to have fake magazines, I'm proposing this one, only this one is a fake cover of the real deal," Fox tweeted, with the picture of the president and a swastika, accompanied by the words "American Nazi."

Fox's tweet refers to a report alleging Trump has fake copies of Time magazine that feature him on the cover hung up in at least five of his clubs.

Fox, who led Mexico from 2000 to 2006, has been vocal in his opposition to Trump, particularly regarding his plans to build a southern border wall.

Earlier in August, Fox mocked the president for taking a 17-day "vacation" at Trump National Golf Club in Bedminster, N.J., while the White House is being renovated. Fox also urged the State Department to take away his "atomic toy" in light of escalating tensions with North Korea.