John Cusack -- someone who's been transparent about his liberal views for years -- is coming after Democrats ... 'cause in his eyes, they have a total lack of morals.
The often-left-wing actor didn't hold back on social media earlier this week, saying those towards the top of the Democratic Party are "full of s***." He goes on to blame them for people switching to Donald Trump as a consideration for the presidency.
It's a long rant that John goes on -- he even takes shots at former Prez Barack Obama's iconic "Hope and Change" slogan ... something John's calling, "another branded hustle."
John's heated talk came in response to an article that claimed Dems are considering doing away with federal wealth taxes ... writing, "This kind of staggering amoral bulls*** is one of the main reason[s] (yes there are others) Trump's demagoguery works on people."