Standing up

The other day I was walking my dog around the block. As I was walking down the street adjacent to mine I saw two kids, a boy and a girl. As I got closer I saw the girl holding a scooter while the boy was hitting her. The boy just kept hitting her on the head even though she was in the ground. So when I got close enough I asked the kid why he was hitting her and he said that she took his scooter so I told him that he could share and that he shouldn't be hitting a girl. As I walked away I saw two grown men sitting on their porch watching this happen. I was upset that those two grown men didn't do a thing