By just having implied that those who don't support your views (me, specifically - being the most succinct and outspoken) are RACISTS, you just did a really excellent job of demonstrating your own nursed stereotypes, bigotry, wrong-headedness, complete lack of understanding, and hate towards those who you suspect don't support the politics that you support...as well as your assumptions, and presumptions - in general - towards people and politics that you don't seem to be cognitively sophisticated enough to have the ability to understand or embrace.
As I entered college just about the time T.U.B.A. was formed (and even back then it's pretty likely that those who founded it were considered "progressive", though American progressivism - at that time had not metastasized itself to the point that it has today of being blatantly and openly fascio-marxist) I can't think of anything that T.U.B.A. ever did that discouraged "minorities" from playing the tuba, and - whenever there was a "minority" (quotations explained in a subsequent paragraph below) tuba player during the T.U.B.A. era who was actively involved in tuba playing, teaching, and regardless of membership, they were particularly highlighted.
Your entire quasi-religious set of socio-political views -which have affected you so severely in so many negative ways - quite obviously generate internal anger, and hate, insulting/attacking ways, and inflammatory/accusatory remarks, which is probably the main reason why your comments are so very offensive to so very many people who are sensible, and who think clearly.
Viewing people - first and foremost as belonging to some biological group rather than viewing them first and foremost on their own merits (character and abilities) - is just about the most insulting and racist-and/or-sexist thing (towards any individual) that I can think of, whereby an individual is - first and foremost - to be assigned to a herd of human livestock, and then it is decided upon whether they warrant not to be culled. It's the promotion of this very type of mentality that attempts to gaslight people (by finger-wagging and claiming that sensible mind-their-own-business/struggle-to-pay-their-bills-and-pay-their-taxes people are "fascists"), while - simultaneously - expressing transparently fascist points of view in doing so.
What a horrible way to think and to be...
I could say that I pity you - as (again, like my paranoid schizophrenic son) it seems pretty obvious that you might possibly benefit from some medications, but you are also an example of the fact that mental illness is not only caused by malfunctions within the human brain itself, but is also societally contagious.
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Here's what was meant by my comments what you attacked and - via your severe cognitive dysfunction - assumed were based in RACISM and SEXISM (whereby they were nothing of the sort, of course)...
Having nothing to do with any race/sex bigotry or lack thereof,
my ACTUAL observation - regarding the current evolution (or - more accurately - it's dissolution, and completely starting from scratch with something else) of T.U.B.A. - is that the I.T.E.A. version nearly totally ignores the absolute collapse of live music performance as a profession (in the US, where most of the membership subscriptions are located), while pushing harder and harder (again, in the US) at strengthening employment opportunities for those who teach these skills (mostly through government funding) - again: skills which are becoming less and less marketable.
Harvey Phillips (who I cannot imagine having been any sort of racist or sexist) always emphasized creating ~performance~ opportunities for tuba players. Creating more and more performers while simultaneously fewer and fewer performance venues exist is (an expression progressives often use) unsustainable, and creating more and more government jobs for those who train people to do jobs that don't exist is the specific classical definition of the political economic system known as fascism (while, admittedly most people have no idea what fascism actually entails, because they've never bothered to read even one scholarly article which would clearly define it for them, much less a well-written book or two explaining its history, what it entails, its many similarities another type of socialist system known as Marxism, and its epic fallacies).