Delusions

Andrew Sullivan links to an article about the recent Amsterdam beating of Chris Crain, a prominent American gay man, allegedly by 'Moroccans'. By way of explanation the director of the Lesbian, Gay, Bisexual and Transgender Rights Project at Human Rights Watch, Scott Long, is quoted as saying:

"'There's still an extraordinary degree of racism in Dutch society. Gays often become the victims of this when immigrants retaliate for the inequities that they have to suffer," Long said.

This reminds me of London Mayor Ken Livingstone's attitude when he invited a radical Muslim cleric to town, although he advocated throwing gays and lesbians off cliffs and Livingstone was supposedly extremely pro-gay rights. Can someone please explain to me when/why standing up for 'immigrants'/Muslims took precedence for liberals over standing up for gays and lesbians and other 'oppressed minorites,' even when those Muslims actively threaten the lives and liberties of other groups?