Not a source I would normally cite but, well done sir. Most of these people are cowards behind keyboards, possibly living in their mother’s basements.
We do NOT have to tolerate this. Whether to young girls or to our friends. The internet makes this too easy and I have friends and co-religionists who have been threatened. The threat is much greater when you are public, as I am not. The only time I was threatened, I finally realized the individual had no actual means to harm me and I have ignored him. Not everyone can do that.
Also, we need to push police to do more about such people.