This is a vicious circle. Gays or non-whites are now expected to vote for certain parties (depending on country) etc., and reap bewilderment at the very least if they do not comply with the expectations.

There is, for example, a fairly famous author (Ayaan Hirsi Ali), who is a Somali ex-Muslim, and she says she was having really hard time from the Dutch left when she lived there. Her ideas simply did not fit the preconceived concept of an African immigrant.