Jared Loughner shot and severely injured U.S. Representative Gabrielle Giffords and killed 6 people, including Chief U.S. District Court Judge John Roll, as well as a 9-year-old bystander, Christina-Taylor Green.
Loughner had expressed a longstanding dislike for Gabrielle Giffords. Loughner had often said that women should not hold positions of power.
Loughner shot and injured 13 other people, and one man was injured while subduing him.
Loughner was "anti-government."
The U.S. Army confirmed that Loughner had been rejected as "unqualified" for service.
Records show that Loughner was registered as an Independent.
While a student at Pima Community College, Loughner had five contacts with college police for classroom and library disruptions.
Some of his teachers complained to the administration about his disruptions and bizarre behavior, as they thought it a sign of mental illness and feared what he might do.
College police discovered a YouTube video shot by Loughner, in which his spoken commentary stated that the college was illegal according to the United States Constitution.
The college decided to suspend Loughner. The college told Loughner that if he wanted to return, he needed to resolve his code of conduct violations and obtain a mental health clearance.
Loughner had two previous offenses: he was cited for possession of drug paraphernalia and he was charged after defacing a street sign. The police report noted that he drew what he said were Christian symbols.
A police report noted that he had previously been caught making graffiti associated with Christian anti-abortion groups.
Loughner's political positions were a hallmark of the far right and the militia movement.
He was a member of the message board Above Top Secret, which discusses conspiracy theories.
Messages by Loughner indicated a distrust for and dislike of the government.
It manifested itself in various ways – for instance, in the belief that the government used the control of language and grammar to brainwash people, the notion that the government was creating "infinite currency" without the backing of gold and silver, and the assertion that NASA was faking spaceflights.
Loughner purchased the 9mm Glock pistol used in the shooting from a Sportsman's Warehouse in Tucson.
Loughner went to a Walmart store near the Foothills Mall to purchase ammunition, but left that store and completed his purchase at Walmart on North Cortaro Road.
He was stopped by Arizona Game and Fish Department officer Alen Edward Forney at 7:34 a.m. for running a red light, but once the officer determined there were no outstanding warrants for Loughner, he was allowed to proceed to his destination with a warning to drive carefully.
Loughner was charged in federal court with one count of attempted assassination of a member of Congress, two counts of murder of a federal employee (Giffords' aide and Judge Roll), and two counts of attempting to murder a federal employee, based on his injury of two of Giffords' aides.
He was convicted and sentenced in federal court.
Surviving victims and family members said that they are "completely satisfied with the federal prosecution", that "justice has been served", and that the federal sentence is "suitably severe."
https://en.wikipedia.org/wiki/Jared_Lee_Loughner