Feds alerted to Gabrielle Giffords shooter three months before Tucson massacre

The Tucson community college that booted attempted assassin Jared Lee Loughner asked federal firearms agents to check his background three months before his shooting rampage. ... eventually suspended him ... student emailed a writing teacher that Loughner put a knife on his desk ... similar complaint from another student... in trouble again four months later after a math teacher said in an email that he appeared to be on drugs... returned to class and was laughing inappropriately and staring at classmates with an "evil" smile... More disruptions... campus cops contacted the Bureau of Alcohol, Tobacco, Firearms and Explosives to look into him as a "person of interest." ... "Arizona has one of the most lenient criteria for a commitment procedure which, having read the police reports, should have been initiated...."