So I disagree. It isn’t right to form a gang on the street and attack someone, and it isn’t right to form a gang on the internet and incite violence, or strongly disrespect a person or people. Even if you take at first step the difference between actual physical harm VS a ‘bytes on the internet’ approach, the mental health harms to the persecuted group are real and have lead to suicides in individual examples, or actual violence as demonstrated in the article.
Speaking from a medical perspective, I don’t draw a difference between physical and mental harm (precious snowflaking aside).
Sure it’s a grey area but carte Blanche in this domain is damaging.