Lord of the Flies - Chapter 7

This chapter was a little more confusing than the last few. The part when Robert got circled from all the other boys was the most confusing to me. I had to read it over to get it. I found it weird how Ralph was trying to get near Robert and the book said "The desire to squeeze and hurt was over-mastering." It makes me wonder if that has any significance with something else in the book. Maybe he might overdo something and hurt someone. I also wonder what is going to happen when they find out that it isnt the beast but a man. Where will the plot go from there.