A top former member of the Republican Party has explained why the opening episode of South Park’s 27th season hit President Donald Trump where it hurts. “Remember, a lot of Trump’s base, they’re not Republicans.

South Park’ drew the ire of the White House after mocking Donald Trump, depicting the president with tiny genitals—here’s the controversial episode, explained.

Parker and Stone reached a $1.5 billion streaming deal with Paramount after a monthslong bidding war, according to the Los Angeles Times. Paramount is the parent company of Comedy Central, where South Park airs, and CBS—which has received widespread criticism over its decision to cancel The Late Show With Stephen Colbert.