The Pirate Bay is a copyright issue. That’s irrelevant to the discussion because copyright is only really on things you own. With that being said, copyright laws are sometimes used in America to remove bad reviews by filing abusive DMCA takedowns claiming that the review contains a protected trademark or copyrighted material and therefore is to be removed.

The thing is, you can challenge a dmca takedown notice by stating it’s fair use. By submitting a counter notification your review or whatever immediately gets reuploaded because you have indemnified the hosting service such as google or Facebook from a copyright suit and stated you yourself will take the full brunt if the person who filed the dmca notice sues.