Wikipedia say Elliott Rodger is:
A killing spree occurred on May 23, 2014, in Isla Vista, California, near the campus of University of California, Santa Barbara. Seven people died, including the perpetrator, Elliot Rodger, 22. Thirteen people sustained non-fatal wounds and injuries.
The spree began when Rodger stabbed to death three men in his apartment. Leaving the scene in his car, he drove to a sorority house, where he shot four people outside, fatally wounding two female students. He drove to a nearby delicatessen and shot to death a male student who was inside. He then sped through Isla Vista shooting at bystanders and hit four people with his car. Rodger exchanged gunfire with police twice during the killing spree. The rampage ended when his car crashed into a parked vehicle and came to a stop. Police found him dead in the car, with a self-inflicted gunshot wound to the head.
Rodger posted a video on YouTube on the night before the attack, titled Elliot Rodger’s Retribution, in which he outlined details of his upcoming attack and the motivations behind his killing spree. YouTube removed the video after the killings, saying it violated their guidelines with its threats of violence.
On the evening of the killings, Rodger e-mailed a lengthy autobiographical manuscript to about one dozen acquaintances and family members. The document, which he titled “My Twisted World”, was made available on the Internet and became widely known as his “manifesto”. In it, he describes his childhood, family conflicts, frustration over not being able to find a girlfriend, his hatred of women, his hatred of racial minorities and interracial couples, and his plans for the killing spree.