An ideal practice for an anarchist society might be a process of rehabilitation instead of expensive jailing and releasing within a few years. Once a crime is commited, it would be better for all concerned parties if the offeneder was rehabillitated. There will always be sadistic assholes in this world, and even with the government and police in power outrages numbers of people are victims. As far as protecting an anarchist society from other countries, I would hope to see the concept of countries an borders abolished one day. It just makes one giant power struggle for the world.
Borders leave areas rich in resources in power, while others starve.
I think I've written enough for now. I'm glad to see one more person who stopped to think about the way things are being run, and wasn't too brainwashed by the media to realize that something is very wrong and unfair. I think that a bunch of people are just interested in anarchy because it is known as rebellous. A bunch of people dont even know what the hell they are talking about. We just want to change it a little.