No, it is not a good thing for people to be allowed to using illegal discriminatory practices. Such groups should be fined or shutdown by the government legal system.
> Its a privilege to be in the group not a right
Discriminatory practices are banned in many places, and you do not have the right to discriminate based on race, for things like housing, in many places.
Such practices should have the government sent on you, who should hopefully arrest or fine you, for illegal discrimination based on race, and that is a good thing.
> judged unlawful and prosecuted when appropriate by other authorities
Ok and current anti-discrimination laws, that exist in many places, are a good thing, and if they got prosecuted for that illegal behavior, that would be good.