I'd like to point out that being a pedophile doesn't necessarily mean that he/she commits sexual assault against minors. I know you weren't saying that all pedophiles commit sexual assault but it does seem to be a general misconception in society. There's apparently an actual support group for pedophiles:
https://en.wikipedia.org/wiki/Virtuous_Pedophiles. Unlike other "support" groups, it in no ways tries to legitimize or justify sex with minors. It recognizes that having pedophilia is a disability that cannot be helped and supports members in going against their innate desires. I found about this a while ago while reading and found it interesting, and lots of kudos for its members for their aptly termed virtuosity. I have a lot of sympathy for them.
As for this despicable, worthless excuse for a human being, I wish that all manner of unspeakable punishments can be dealt to him for his unthinkable crimes. Despite what I desire, I recognize that any extrajudicial punishment is wrong and in principle, stooping down the same level as him. While I sympathize with the sentiments of those who wish to see him have a taste of his own medicine, I have to disagree with them.