officials say jared loughner posted comments about government conspiracies, committing suicides, andice. he said, among other things, i have this huge goal at the end of my life, 165 round. i'm fing dead, i'm about to prove something and i can't stand to look at that fing pig without thinking about murdering that -- you get it. trace gallagher has more. what else are we learning from the files? >> wasn't about just things you said online. we're also learning about things that witnesses told the fbi about his bizarre behavior, including a former college classmate who told the fbi, quoting, on another occasion, loughner reacted strangely to the reading of another student's poem in class,ing a the poem was about abortion, wars, and killing people. he said why don't we just strap bombs to babies. another witness told the fbi, laughmer would go to the city library to watch videos online, talking loudly at the screen, disturbing other people in the library. the witness remembered, quoting, looking over to his computer and noticing that he was watching giffords' speeches online. loughner sa

they include paranoid online rants in which jared loughner expressed anger toward the government.was sentenced to life in prison for the 2011 shooting spree that killed 6 people and injured 13. >>> authorities in los angeles admit they shot and killed the wrong man. john winkler went into a neighbor's apartment in hollywood to save friends being held hostage at knifepoint. when l.a. county deputies arrived they saw winkler running out behind a stabbing victim covered in blood. winkler was helping the victim but deputies thought he was the suspect and opened fire. >> i want to personally express my heartfelt sympathy to the families of mr. winkler. taking the life of a innocent person is a police officer's greatest nightmare. >> winkler moved from the seattle area six months ago with aspirations of becoming a television producer. at the time of his death he got a job as a production assistant at comedy central. >>> 49ers star quarterback colin kaepernick is at the center of a police investigation. what police are saying about an incident so far. >> reporter: i'm cate caugiran. brea

one that comes to mind is the one in tucson when jared loughner was tackled when he was going to reload. but he already had a large capacity magazine and was able to kill and injury a very large number of people. there is a direct correlation between the ammunition capacity that the shooters have and how many people will get shot in these incidents. so i think ammunition capacity is relevant in mass shootings, not in whether they occur or not, but how many people are shot. that's my own view. >> okay. maybe we'll leave it there, give emily a chance to can chime in. >> i'm so sorry about your mother. that's horrible, i'm so sorry about that. no, i don't -- look, of the 9,000 or so gun murders, about 300 are rifles of any sort. dianne feinstein, who is the one who backed the assault weapons ban last year, puts the number of people who are killed by assault weapons, and to clarify for people who aren't familiar with them, what we in the media or others call assault weapon is not an automatic gun, it's a rifle that has certain physical ergonomic type characteristics whether it's a collapsin

according to fbi files, jared loughner discusses killing and his anger toward the government. paranoid expletive filled rants on myspace. loughner was sentenced to life in prison for the 2011 shooting spree that killed 6 people and injured 13 in tucson >>> authorities in l.a. admit they shot and killed the wrong man. john winkler went into a neighbor's apartment in hollywood to save friends being held hostage at knifepoint. when l.a. county deputies arrive they saw him running out behind a stabbing victim covered in blood. winkler was helping the victim at the time. the deputy thought he was the stabber and they shot him to death. >> i want to personally express my heartfelt sympathy to the families of mr. winkler. taking the life of a innocent person is a police officer's greatest nightmare. >> winkler moved from seattle area six months ago with aspirations of becoming a television producer in southern california. at the time of the death, he had just landed a job as a production assistant at comedy central. >>> cbs has named a replacement for david letterman on "the late sho