Hmmmm...where to start....
The first guy who responded actually stole my answer....but I can elaborate....
Every time I hear people complaining about what people put in their ads and I defend them...I am NOT endorsing or agreeing with ANYTHING they are saying..I am simply trying to point out the power of free speech and how many good things come from it....
...and this is a GREAT thing!!!!
Why?
Racism is an issue that is tough for most people to even address...and they will mostly refuse to even look at it or have an honest dialogue with themselves...or pretend whatever the fuck they want.....and then they will dig their heels in the sand.....
Groups like this give everyone a chance to honestly look at an issue and you should thank them for being honest...because there are millions of other people who don't even know they are lying to themselves...or don't even know they are racist....and yelling at them does nothing. Using this example is great because they at least put it on the table and are honest about it...and so you can begin an honest dialogue....even if they make your skin crawl or make you want to take a bath to get the stench off of you...they exist and are proud of it...so that gets you past the yelling back and forth ...
I think this should be shared on every gay site.....they are so disgusting I think everyone deserves a chance to look at the mirror that they left on the table for anyone to use...not many people will be that brazen so the mirror is a gift.....
These people can become a mirror for the people who are racist but don't want to be...or don't know it...or are ashamed of themselves. That is what Fred Phelps did to homophobes...he became their mirror..and pundits write about how shocked they are that society changed so fast on the issue and claimed it was unprecedented when it is obvious to me that Freddie deserves the credit.....because he was saying what so many or them were thinking..and he made them look at themselves....and evolve...because they got to see how fucking ugly they were....and his open hostility toward gay people was as ugly an example as they come.....
What a gift! I lit candles for the fucker on his deathbed....he was our best ally....damnit...
In the end..hopefully the black guy planned on creating this mirror....I can only hope that is the case. If he did...I would thank him myself because most race discussions end up polarizing the participants which is not productive....
Join this group today to be invited to our next party! You must be white, fit, masculine, 21 to 35 to get in. This is a drug-free zone. The group encourages healthy and fun activities, masculine activities, like team sports, listening to rock music, parties, and much more! If you are a young, fit, masc white dude who likes other dudes – a bromo – join this group. The group is fun and the guys are fun. 
Oh yeah ^^^^ these guys sound like Modern Day Nazi Youth...really creepy...OMG...
In the end...they left a lot of good things to debate....
For instance..this:
We oppose political correctness – we do not support diversity. If someone considers the group ’racist’ or the organizer ’self-hating,’ we don’t care. It’s ridiculous how race is the only aspect of the group that gets criticized. Why single that out? People hang around people with the characteristics they like. This is normal. All women, all men, and all black groups wouldn’t get the same criticism. 
They have a point..there ARE groups that are all women...or all men...or all black...and so many other things that are all one thing....
...so start by discussing that. 
A discussion is not yelling at them. For starters...I would ask directly why there was a Black Man in charge of a group that did not allow Black People?? I can figure out the answer myself....but I want to hear their answer..in depth. Wait for an answer...a clear and specific answer. Force them to tell the truth..and then go to the next question. If they don't answer the question.,..keep repeating it 'til they do. 
For instance...if they say they only like young and fit and masculine white males like themselves...honest enough. Preferences are what they are...so move to the next one. Let them paint their own picture.....because it isn't pretty. 
Then ask them what they do when one of their "bros" 

 turns the magical age of 35?...do they turn into Children of the Corn?

 ...or gains any weight?...or decides he is a REAL friend of Dorothy and decides to put on a dress?...or (gasp)...finds out they are racially "impure"? Do they get kicked out? What if one of the bros gets into an accident and gets a scar or two?...or is disfigured or suffers burns? Kicked out? After all..it is all about "preferences"

...eh?
If you want to show them that the other groups are actually different..you have to see who they are as individuals..and as a group...first...and instead of telling them...let them tell you...coax them to be even "more honest"...
It might not make a bit of difference for any of them..but other people are reading too...and it might help them evolve....