It does exist, not legally by definition but it is often referred to as such when one person or group comments negatively on another person or group. But then it is protected under the 1st Amendment. It probably changes drastically when the speech incites, encourages or is responsible for violence, mayhem and the cost of injury or fatality to others, which may be looked at and responded to as "terroristic threats". There is a very fine line which under "hate speech", might morph into terroristic threats, or be so considered.
