A high school friend of Tucson shooter Jared Lee Loughner says that when the two were in touch a couple of years ago, Loughner "did not watch TV. He disliked the news. He didn’t listen to political radio. He didn’t take sides. He wasn’t on the left. He wasn’t on the right."

Loughner was apparently so obviously mentally unstable that fellow commenters on a UFO conspiracy chat room could see that he was ill: 

In a discussion apparently started by Mr Loughner last July about currencies, a common theme in his online trail, a member using the name mordant1 intervened.   "I think you're frankly schizophrenic, and no that's not an amateur opinion and not intended as an uninformed or insulting remark," he said. "I really do care. Seek help before you hurt yourself or others or start taking your medications again, please."   The contributor assumed to be Mr Loughner replied: "Thank you for the concern."