Loughner's behavior became increasingly erratic after the Army incident. Friends say he would occasionally speak in random strings of words. He had run-ins with police over drugs and his vandalization of a street sign. He became paranoid that the government was trying to control him — or everyone. He couldn't keep jobs at Quiznos and an animal shelter because he wouldn't — or could no longer — follow instructions.
When classes began at Pima Community College last year, Loughner's behavior frightened fellow students from Day One. "He had this hysterical kind of laugh, laughing to himself," says Benjamin McGahee, his math professor. He would say nonsensical things about "denying math." Says McGahee: "One lady in the back of the classroom said she was scared for her life, literally."
Read more: http://www.time.com/time/magazine/article/0,9171,2042358,00.html#ixzz1jH67kvdr
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