EDIT: 3 people shot according to CJ TV on woke stream. One arm blown partially off, one shot in the head. Happened right next to a hospital.
Might be the same shooter. He shot someone in the head, ran off, people chased him, he fell on his face running down the street, and shot two people trying to get him. One in the chest, one in the arm.
Heroism, trying to stop further shootings. It may be "dumb" but it's similar to how the "15:17 to Paris"/2015 Thalys train attack was executed (though three people rushed the gunman there and one of them subdued him and the other wailed the shit outta them to knock them out).
It's not the recommended course of action, obvously: But some people are thinking "if we stop him here, he can't hurt others."