Forest Road 100- Sisters Oregon

Me and my girlfriend rolled into this free public campsite around 10pm and easily found a spot to set up camp. It seemed pretty good and safe as there were multiple other people RV/Tent camping. But at about 1:30am in the morning someone near us starting screaming at a person to get away from his campsite and was clearly in a great deal of panic. We decided during that incident to pack up and leave in the middle of the night because we felt unsafe and was worried someone might lurk into our campsite like what happened to the other fella. Be cautious because it is public and unguarded.