Talk to ACLU to see if they are willing to take your case

YELP, like any other customer review services, is a place for customers to express their opinions about services they received. When you buy or sell things on eBay, you give feedback ratings to the other party. Has any one been sued and found guilty for giving negative ratings? If you think principles are more important than money, by all means fight for your right. Seek help from other people and organizations that hold the same belief.