I'm so sorry this has happened to you. It is against the law for a landlord to enter your residence without 24 hour notice unless it is an emergency. That is a violation of renters laws. Public housing has taken a stiff approach to removing illegal drugs from housing developments, so this is not unique.
I know you will receive more advice than I can offer. But first I would find you local renters advocacy group and explain to them your situation and see if they can help you. Also, take a look at the list of california lawyers and make a call to one or more of them. You are always offered free consultation, and they can help lead you to the proper channels.
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Lastly, call the news channels, let them know what has happened. Let them sing it to the rafters. There is a compassionate news investigator somewhere in your area who would love to break the story. Public outcry can do amazing things.
I sincerely wish you the best, and I hope you will keep us posted on what is happening.
Peace and happiness