"When it comes to race relations, he's like an old-school segregationist. When it comes to policy, he's like an old-school napalmist. When it comes to women's issues, he's like a frat-house rapist," Morello says in the video.
The video was shot as an introduction to a song which Morello made with Ani DiFranco and "riot folk singer" Ryan Harvey.
The song is a cover of an unrecorded Woody Guthrie song titled Old Man Trump, written more than 60 years ago against Donald Trump's father, Fred Trump.
The song largely takes aim at Trump's housing projects, Beach Haven, where Guthrie leased an apartment.
You can hear Morello, DiFranco and Harvey's version here: