We absolutely should continue to mock and ridicule everything these fascist fucks do. I don't know what that guy is smoking but mockery and ridicule are one of the most effective rhetorical tactics when it comes to the chronically reality deprived.
I think some people see it as "making light" of the topic, and sure, it's important to not let it distract from reality. But we can walk and chew discordant gum at the same time.