Wikipedia article on Hate Speech sez:
"Hate speech is speech perceived to disparage a person or group of people based on their social or ethnic group, such as race, gender, age, ethnicity, nationality, religion, sexual orientation, gender identity, disability, language ability, ideology, social class, occupation, appearance (height, weight, skin color, etc.), mental capacity, and any other distinction that might be considered by some as a liability. The term covers written as well as oral communication and some forms of behaviors in a public setting. It is also sometimes called antilocution and is the first point on Allport's scale which measures prejudice in a society. In many countries, deliberate use of hate speech is a criminal offence prohibited under incitement to hatred legislation."
I'm done here.