At Twitchy, "‘Craven, irresponsible politicians and the NRA’ blamed for Santa Barbara mass shooting."
More at LAT, "Isla Vista shooting suspect targeted sorority, neighbors, strangers."
Much like James Holmes at Aurora, we'll see lots of medical information trickle out over the next few days and weeks on the suspect's psychiatric state. This guy was sick, bad, and should probably have been hospitalized. I'm watching CNN along with my wife, and she mentioned that one of the analysts there suggested that Rodger's parents might have been tired of dealing with their sick child and shipped him out of town to be out of their hair. I certainly wouldn't doubt it. Things look especially bad in that the family knew about the videos and the kid wasn't placed under the care of a psychiatrist. (He did have some treatment, but it clearly wasn't sufficient to prevent this kind of evil rampage.)
ADDED: From Weasel Zippers, "Father of Victim In Santa Barbara Killings Blames ‘Craven Irresponsible Politicians’ and “the NRA” for His Son’s Death":
Sigh, this father is overcome by grief, which media immediately exploit. Mr. Martinez, Elliot Rodger killed your son because he wanted to kill people. He is the responsible one for your son’s death.