Many feel the internet is "no holds barred" and "without barriers". Unlike life, on the internet there are no local "police" that you can call to get in the face of someone harassing you. The only recourse you have are the site owners, site moderators, site host (if they aren't hosting it themselves) or the perpetrator's ISP, which isn't available to you as a poster. Like it or not, given the nature of the internet and the lack of "police", the responsibility for "upholding the law" falls on the shoulders of the person who owns the domain.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi