Vice President Kamala Harris' running mate Minnesota Gov. Tim Walz and Hillary Clinton compared former President Donald Trump's rally at Madison Square Garden to a 1939 Nazi rally.

Before Trump's Madison Square Garden event, Democrats drew parallels to a Nazi event in 1939. After the gathering, the comparisons were unavoidable.

Sunday marks the first time the DNC is projecting counterprogramming onto a building while Trump will be inside it, but it's far from the first time Democrats have deployed the technique.