what happens during a strke involving casy and tom joad?

Casy, Tom, and the rest of the strikers are confronted by the police. A short, heavy man with a white pick handle swings it at Casy, hitting him in the head. Tom fights with the man, and eventually wrenches the club from him and strikes him with it, killing him.Tom immediately flees the scene, crawling through a stream to get back to the family's cabin.