After the Isla Vista, CA tragedy, there was the usual klaxon cry for more gun laws such as enhanced and universal background checks, mental health holds, waiting periods, reduced magazine capacity, one gun a month limits, handgun restrictions, etc. All laws that California had at the time of the shootings. Those laws simply didn’t work. They failed despite all the expense, aggravation, and law enforcement and legal system attention. They failed because someone didn't care a whit that they broke those laws.
psychopath, planning for years, was able to fulfill his sick imperative. He
planned around all the restrictions; methodically assembling the knives,
hammers, guns, magazines, and ammo of his dark fantasy. What he didn’t get was
the institutional treatment he desperately needed.