I often see the police at my local library here in SF. They now have a large security guard there full time. More often than not the library is reasonably cal

I often see the police at my local library here in SF. They now have a large security guard there full time. More often than not the library is reasonably calm, but I would say once a week we have someone screaming and freaking out. Overall though, I love the library and go a few days a week when I need to get out of my apartment to get some work done. If libraries did not exist already, I couldn't even imagine them being funded now a days. A free place!? Where people can read books for free!?!?!?