There are permitted, and even expected, to be the NAACP, United Negro College Fund, Asian Student Unions, Mexican Day Parades, etc, etc.
But you can't even have a group of assumedly (because let's face it, we don't know the races of each other over the interwebz) white guys talking on the internet about race issues we face without a disparaging comment being thrown at them implying they're holding some kind of Klan rally and burning crosses.
Someone like liblady would have a cranial explosion if someone were to create an NAAWP or a United Caucasian College Fund or a Anglo Saxxon Student Union. But God forbid she recognize the blatant doubles standard for what it is. And if you can get that type to recognize the double standard, usually they will fall all over themselves making excuses for the double standard's legitimacy.
(And no offense to liblady who is actually a class act...she just happened to be the one that chimed in illustrating my point)
But the at the heart of the matter, there is a double standard there and there is no reason for that double standard.
The difference between the legitimacy of a NAACP and an NAAWP is that blacks are have-nots and need advancement by any means possible. Whites have it all in this country - why would they need advancement?
No other ethnicity has to worry, consistently, about what they say in mixed company, on the job, pretty much everywhere for fear of being misunderstood and branded with a scarlet letter that ruins their public image for life sometimes.
You look at all the public figures in the past decade who have suffered economic and reputation loss as a result of being branded a racist for some off color remark. I think you will have very "white washed" results in that regard.
Meanwhile, you have public figures that are ethnic minorities that make an entire career and brand from instigating racial tension, hyping racial disparity, and using racially charged inflammatory language.
This dichotomy is so apparent and accepted that there are social theories that not only name it and explain it but go so far as to legitimize the double standard.
How many people reading this are familiar with the term "white man's burden"?
Even more pointedly, how many of us accept it as just being how it is and something we are obligated to believe?