How does Johnny's past experience with the Socs affect his behavior in the park?

In the beginning of the book, Johnny is jumped by the Socs. This affects his behavior around the Socs because he is much more on edge and concerned for his safety. This results in his being more aggressive and violent in his dealings with the Socs. We see some of this fear and violence when the Socs pick up Cherry after the drive in movie. Johnny eyes the rings on Bob's fingers remembering how much damage they caused when he was jumped. This fear comes back when Bob is drowning Ponyboy in the fountain, and Johnny acts more violently because of it.