Yes this is the basic problem. Those in power will always serve themselves. It doesn't matter what they did or who they were before they were given power, the moment they get power:, they'll do whatever they can to keep it
You could start by trying to resolve any conflict that would lead to that in the first place. But if you mean do it just because you feel like it then the community could require you to make reparations or something like that. If that still didn't work you could be kicked out of the community
Instead of saying I'm an anarchist I talk about things from an anarchist perspective without mentioning the word "anarchy". I usually will defend communism because I consider myself communist, but if you mean socalled "communist" states, I'll usually point out that none of them were actually communist
Power structures can absolutely be eliminated. By taking away the ability for anyone to carry out the threat of violence, and removing harmful institutions like the state and capitalism
"Fascism is characterized by a dictatorial leader, centralized autocracy, militarism, forcible suppression of opposition, belief in a natural social hierarchy, subordination of individual interests for the perceived interest of the nation" this describes the USSR pretty well. The US is also bordering on fascism, but that has little to do with the USSR. Those weren't really labor camps so much as they were POW camps for fascist opponents. Also what's your opinion on north korea?
Fascism is about power not private property. Not sure where you got that Spanish anarchists operated labor camps as I can't see any evidence for that online but even if that was true, a system can't be said not to be fascist because someone else did it. Having forced labor camps is fascist regardless. Also you say that they sought to repress those critical of socialism or communism, but it was usually used to repress basic forms of expression and those critical of the leaders.
This was a good response. What about marxists that support council communism? I don't know much marx theory but I feel that council communism is different than a traditional state
Interestingly enough what you just described is a democracy, the socalled system that gives people power. Anarchist societies would be by consensus