Stephen Colbert stooped to a new low on Tuesday night when he connected Donald Trump to Naziism and used a swastika to represent the businessman’s beliefs. In a so-called comedy bit, the Late Show host used a chalkboard to mock Trump’s attacks on Barack Obama.

As he began to draw the Nazi insignia, Colbert yelled, “Trump is saying Obama is not smart because he won't say radical Islam.” Completing his drawing, Colbert joked, “Trump then says this is ‘inconceivable’ so "something must be going on. Probably because Obama is a Muslim, and that is a bad thing."

To the cheers of his liberal audience, the late night host looked at his swastika and seemed quite pleased with himself. After making another drawing, Colbert sneered, “I hope Trump explains [his comments] soon. But until he does, that kinda looks like he’s an asshole."

A transcript is below: