Al Sharpton Says 'Saddle Up, Donald,' We're Gonna Fight You Hard

Al Sharpton is anything but conciliatory ... he vows to go after Donald Trump with a vengeance.

We got the civil rights leader at NBC Studios in NYC and he said he's determined to block Trump's initiative ... the wall, the bans, etc.

It sounds like the good Rev doesn't want to give Trump a chance ... he just doesn't trust him.