This would be an extremely stupid and short-sighted strategy. California's Hispanics are a rising power. White American liberals will look pretty good in comparison once mestizo Mexicans take over. White liberals, for example, don't usually engage in home invasions, drive-by's, racially motivated terror rape and other forms of ethnic cleansing. Not even in California.
You're right. However, white liberals have done the following:
Delivered practically all our nuclear secrets to hostile China.
Stripped our military of sorely needed funds
Gutted the missle defense funding at a time breakthroughs were occurring.
Turned down an offer from Sudan to get Osama's head on a silver platter
Stacked our judiciary with liberal judges who routinely let off free or very easy, the perpetrators of all the offenses you mentioned above.
Forced a society denigration policy of diversity and acceptance upon us and our schools
forced a radical environmental agenda on our national forest and land policies that have been a major factor in the total descruction by fire of over 8 million acres in the last two years.
Attempted and have been partially successful in taking away our Second Amendment rights that would allow us protection from the offenses you listed above.
Forced high taxes upon us to fund social giveaways designed to buy votes.
I could go on for another hour but I've got to work to pay my taxes.