Northern Illinois tragedy

hearing about this 27 year old former student going back to the lecture hall and killing 5 people before killing himself is just scary this is happening quite a bit and sooner rather than later college campus's will have people being checked for weapons and other things because this is just the latest and it is truly sad and wastes of human life and what are the reasons again? the attacker seemed like a well rounded guy but it was found out that he had stopped taken his medication about two weeks ago. he had his weapon inside of a Guitar case. violence is in places we least expect and this kind of tragedy needs to be stopped. my prayers and Sentiments go out to all who lost loved ones, friends,etc... it is so sad to turn on the news and hear this.