Guns at school

Of course you cannot bring a gun to school. But these rules only applies for students at the university. The police is everywhere and I am getting used to that, but the other morning I thought that it was a little bit to much. There are at least two police cars stationed at the university to check the students and professors. The university is parted into sectors and I of course only have access to the sector I live in. So I have to show identification to get into the campus and after that I have to show documents that allow me to enter the dormitories where I live. That means it is practically impossible for people from outside to get in. But never the less police apparently have to check us all the time - they must be very bored. The other morning I entered the lift at 7th floor where I live and on 6th floor two patrolling officers entered the lift carrying guns off course, but I cannot help asking myself if it is really necessary for one of the officers to carry a machine gun as well? You never know with these students...
To calm everyone down I have to assure you all that the university is the most peaceful place you can imagine.