Hate speech

Any communication that is intended to humiliate any person or a group on the basis of some characteristic such as race or sexual orientation is hate speech. In law, hate speech is any speech, gesture or conduct, writing, or display which is banned. The reason to ban hate speech is to prevent the violence or prejudicial action against or by a protected individual or group.
The law may identify a protected individual or a protected group by race, gender, ethnicity, nationality, religion, sexual orientation, or other characteristic. In some countries have considered criminal or civil penalties or both for hate speech.
A website that uses hate speech is called a hate site. Most of these sites contain Internet forums and news briefs that emphasize a particular viewpoint. You could find common characteristics of hate sites in following link:

http://webcache.googleusercontent.com/search?q=cache:0ux7dI7y9iMJ:www.media-awareness.ca/english/issues/online_hate/deconst_online_hate.cfm&hl=en&strip=1
Source: http://en.wikipedia.org/wiki/Hate_speech