I cannot recall a year during the past 20 without reading about California's penal system releasing hundreds of serious violent criminals due to overcrowding.
California's budget deficits and public debt are into epic proportions with no end in sight other than bankruptcy for state and local governments.
It occurs to me that even a relative handful of Californians could easily band together and announce to their state legislature that they simply refuse to comply with any state gun control laws, and if the legislature wants to enforce those laws it will be necessary to arrest, detain, try, convict, and imprison thousands of otherwise law-abiding citizens, all at public expense, and done while explaining why they must release murderers, rapists, arsonists, and other menaces to public safety in order to lock up peaceful taxpaying citizens.
No violence. No force. Just peaceful civil disobedience on a large scale, no plea bargains, no bail posted, jury trials for everyone charged (further choking a court system that is barely functional anyway), appeals of every conviction, with federal and state civil rights lawsuits in every case.
California has always been at the leading edge of the gun control movement. The citizens of California have always tried their best to preserve their rights in responsible and lawful ways, with the response always being greater and greater restrictions with the end game becoming more clearly visible all the time.
I would suggest that if even 1/2 of 1% of California's population banded together and drew this line in the sand the result would be complete collapse of the gun control movement, first in California and then nationally as the force of such an example became fully understood.
The rest of us should be prepared to support our cause with funding for legal defense and litigation expenses as well as publicity on the issues and specific cases.