Horrifying moment during Bronny James' high school basketball game over the weekend ... LeBron James' eldest son was rushed off the court after fans in the arena feared someone had a gun.
Bronny's Sierra Canyon boys basketball team was taking on DeMatha as part of a big showcase event in D.C. on Saturday night ... when suddenly, near the end of the game, chaos broke out in the stands.
Several fans in attendance reportedly got into an altercation -- and, at one point, some thought a gun had been pulled.