Not surprisingly I too have been blocked as well.
It is almost worth leaving the picture up just to further illustrate his ignorance. He is a fool and I think that cannot be forgotten. Interestingly I have 6 friends in common with him and while I know none of them would support this stupidity I don’t know if it would be worth alerting some BNT, though I would not want to be tied professionally in any way with him including liking his FB page.