So easy for people like you that live warm cozy lives to criticize the police in situations like these. Sorry, but if I'm in a profession where my life is in danger every second, and some dude has a gun in a place that every person on Earth knows you shouldn't be having one, I err on the side of protecting my life and innocent people. Police officers aren't there nor is it their job to practice psychological evaluations. They are there to protect all of us, and themselves from dangerous people. This idiot brought a GUN into a public place and was behaving in a manner that suggests he was working up his courage to do something that unbeknownst to the police, could have been some mass shooting for whatever reason. I chalk this up to one less idiot that can breed.