No it's not. Just look at what life in Mexico is like. It's not going to remain petty street gangs vs you. It's going to be organized crime cartels and war lords. The only thing holding that shit back now is the government. And no, you are not gong to organize your own militia and the proof of that is the fact that in the best of times (literally right now) when you have to most freedom, money, and access to resources you still can't organize anything. If you could you absolutely would not be crying about the police. You need to realize you are not that person you imagine yourself to be.

Like the great Ali once said: everyone has a plan until they get hit. It's not going to work the way you think it will. The proof is every warzone in the world. Everywhere you can't count on police to show up is the same. It is not a utopia, it's hell. People like you have been brainwashed to believe the literal opposite of reality.