If circumcision wasn't a religious ceremony it would probably be banned on the basis that it was cruel, except in circumstances where it was medically necessary. But as it is a well established religious ceremony in a well established religion or two, that won't happen.
That said, all sorts of abuses are perpetrated by parents on their children, some deliberately, some not so, some in the mistaken belief of "doing what's right", some just completely clueless. Parents are really thick sometimes, and getting their children circumcised is only one example of that. Pierced ears on babies is another example. I'm sure any of us could think back to their childhood and find something stupid their parents did that could have, or actually did, have a negative impact on the rest of their lives. Saying that circumcision is any better or worse than any of those things, and therefore does/does not warrant prosecution, would really kick the hornets' nest for a lot of people, not just parents who have their children circumcised.