I don't know if he is guilty or innocent - or somewhere in between. I haven't really studied these cases, though, or what the actual evidence was. If it's a case of one person's word against another's, then it's a weak case - although it doesn't mean it didn't happen either. But, it's a serious business to bring a criminal charge where someone could lose their freedom for a long time, and there have been too many wrong convictions based on flimsy evidence. So, innocent until proven guilty - but they actually have to practice it, not just say it.
But it's all moot now, since MJ is dead. Only his victims (if there are any) know what really happened, and I can only hope that they're getting on with their lives as best they can. I don't know how much of a role their parents had in it. I can't imagine my parents ever taking me to go play over at some celebrity's house.