As they plow their way in to gain attention you also realize that there are other students. These students don't care about anything, anyone or the consequences that fall upon their shoulders when committing some ludicrous act in attempt to amuse themselves as well as fellow hoodlums. School is safe, even though many don't agree. We are no different than anywhere else. If you walk down the hall you can pick out the troublemakers and the studious crowd.
Bad stuff happens everywhere and there is no point in ignoring it.
Pretending it isn't there will do no good. We just need to acknowledge the problem and move on, without dwelling on it or fearing it.