In 1997, in what became known as the North Hollywood shootout, two bank robbers wielding semi-automatic rifles including a Bushmaster were outgunning police, wounding 11 of them plus six civilians, until officers barged into a gun store.

Source: https://www.pressherald.com/2023/11/21/how-a-maine-businessman-made-the-ar-15-into-americas-best-selling-rifle/