The guy who tried and failed to assassinate President Ronald Reagan back in the day is now being asked to get the job done … with President-elect Donald Trump.

John Hinckley Jr. is being flooded with social media requests to kill Trump in the wake of DT’s big win on Election Day … and we discussed it all on “TMZ Live.”

Check out the clip … Harvey and Charles explain how the Secret Service is getting involved here.

Pretty troubling stuff all around … and we’re guessing some folks are about to get a visit from the feds soon.

Check your local listings for when TMZ is on in your area or catch up on past episodes!