Squatters is a civil issue in California, and can take many years to have them evicted if the squatters know how to game the system.

I'm totally on board with expedited eviction of squatters from a primary residence, and even harsher penalties for it. I believe squatters are valuable and I'm generally in favor of all sorts of crust punk bullshit, but they should have a duty to do reasonable reconnaissance. The difference between someone getting into an old boarded up building or a house nobody has used in years vs one where people are just on vacation (even if it's a few months) is massive. The former is an attack on property believed to be abandoned with good reason, and the latter is an intimate violation of someone's home.