There is nothing from the legal realm that you can do against the organization or the individual members. Yes, they are discriminating against you. But the discrimination is personally based, not based on a protected classification (race, religion, etc.) or protected activity (union organizing, claiming industrial injury, etc.). And you are not an employee. Discrimination in the context and manner you describe is painful and offensive but it is not unlawful. Find a new organization and move on with your life.
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