"In an anarchist society then, there is simply no entity that may legally aggress against the person or property of any individual. This is a simple concept but seems to confuse many people. " 

Well yes you drooling moron because Legally : As permitted by law; not contrary to law, is in accordance to the law, ie the rules of the state. A society may have customs. Seriously, have you ever heard of tribes of "primitative" people having laws. If so, let me know who they are. To the best of my knowledge laws is what governments have. So if there is no state then there are no laws, So NOTHING is agains the law, hence nothing is illegal. Thus if a group of my friends wishes to take you home and women that is perfectly OK. And since it is not illegal, it must be legal.