I'm not sure what a protected group is, whether there's a list somewhere, of it's all relative (who holds more 'power' is less protected)?
Notable organizations in the list that I noticed:
Anti-Defamation League - The group that decided pepe the frog was a hate symbol
Muslim Advocates, World Jewish Congress - This group doesn't irritate me so much, except there are no advocacy groups for Christians.
National Network to End Domestic Violence - Specifies that they focus on ending female domestic violence only.
Feminist Frequency - Given how few people identify as feminists, I'm surprised this one is here.
There are probably more sketchy ones that I don't know.
You're being downvoted because people think you're pro-antifa, which is sort of sad. I had to undown your post because it was too difficult to parse initially. Thankfully, your other posts in this topic showed that my parsing was incorrect.