Harassment

There is a website where a bunch of people post anonymously about other
women. They have recently attacked me. They took my pictures from my flickr
site. Flickr is a photo sharing website. My pictures have a copyright on
them. They posted nasty things about that are not true. They do this to
numerous girls/women online. I am wondering what my rights are? I would like
to get this site shut down. It has devestated a lot of women, including
myself.