Jamal Murray Confronts Heckler In Heated Mid-Game Exchange, Fan Ejected By Police

Jamal Murray needed both Nikola Jokic and a referee to keep him from going after a fan in the stands during Thursday night's game ... with the Denver Nuggets star losing his cool over disrespectful words being hurled his way.

The altercation was caught on video -- showing Murray on the court playing against the Pistons in Little Caesars Arena as multiple Pistons fans heckle him.

Murray heard the jabs loud and clear ... and once the whistle was blown to stop the play, the 6'4" guard began walking toward the guy with a few words of his own.

The referee immediately got in Murray's way and held him back ... while the guy in the crowd yelled, "you ain't gon' do s*** boy!!!"

Jokic -- who stands at 6'11" -- ran over to assist the ref ... and pulled Murray back to center court.

Arena security witnessed the exchange between Murray and the man ... and you can see in the video what seems to be police officers pointing at the guy in the stands.

As of now, it's unclear if the fan was removed from the arena or if he received any punishment.

BTW, the Pistons lost ... and currently have the worst record in the NBA. The Nuggets, however, are No. 4 in the league and lead the Western Conference.

Do better, people.