To me, these kinds of injuries are worse than many kinds of physical violence. People who have been extracted from, and recover from, situations like this (as much as anyone can) often say they would have preferred to be beaten. And they don't mean this lightly.
This is all "just" speech; the perpetuators and victims often agree that they "never laid a finger on them". But it hardly about beginning or preventing new ideas. In some countries, this kind of speech and pattern of abuse is criminal. But it's not universally so. Should it be? The way these countries frame it is that rights - like freedom of speech - are not absolutely, but must be balanced with the harm they may cause, and to assess things almost case by case with balancing tests. This seems to me a very workable system of law with good outcomes.