> threats of death o[r] violence
OK my threshold for that word is sort of lower. Like the other day I watched Rachel Maddow on Youtube commenting on the election, and the comments were full of misogynist, well, 'sneers', let's call them that. No "I will punch you" or worse, but an aggressive, menacing, demeaning, sexist, supremacist tone. To me that already is hate speech, because it is speech that expresses hate and is intended to rile up other people so they chime in and express hate, too.
It's ice cream in the sense that frozen yogurt is ice cream, maybe except for the law.