Giannis Antetokounmpo wanted to practice free throws after his Bucks squad lost to the 76ers ... and when several arena employees got in his way, he lost it, knocking over a 10+ tall ladder.
And the whole incident was captured on video by some fans who were still in the Wells Fargo Center Friday night in Philadelphia.
The Bucks lost to the Sixers, 110-102 ... and Giannis dropped 25 points. But, he was awful from the free throw line, shooting 4-for-15 (27%) from the charity stripe.
So, after the game, Antetokounmpo clearly wanted to work on his free throws.