It’s possible you were downvoted without being answered because it’s trivial to Google “Proud Boys”. Here, I’ve just done it for you and here’s the first link: the Wikipedia page on the group —- https://en.m.wikipedia.org/wiki/Proud_Boys
Fair enough, but with a name as generic as “proud boys” and given this same phrase is being used negatively to describe people who are actual patriots you can see the confusion. TIL “proud boys” is an actual, far right, org.