Immoral philantrophy?

[ahnuld]

Is it immoral to only donate to charities that only help people of a certain race? For example, the Mercaz is an organisation attempting to help mainly Jews. I feel it is a good cause as it helps my people who I feel are discriminated against by other charitable organisations around the world. So in a sense, to counter-act that discrimination, I discriminate by only donating to Jewish charities. Is this immoral, or just human nature to "look out for your own"?