John Carlos -- the Olympian who famously raised his fist at the '68 Games -- is speaking out strongly against President Trump ... saying he's bad for America and needs to go.
"You've created nothing but divide and dissent and anger and hatred toward the American citizen," Carlos said on "TMZ Live" Friday -- which happens to be the 52nd anniversary of the famous Olympic moment.
The former track star says he's disgusted with Trump's personal attacks against Kamala Harris and other women ... and is asking voters to rise up and do something about it!