whats in a name – from a Torah perspective there is absolutely no comparison whatsover between two people of a different race marrying each other and two men “marrying” each other. There isn’t any issur in the Torah amongst Jews or non-Jews for two people with different colored skin to marry each other. For two men to have relations with each other, even if both aren’t Jewish, is one of the biggest issurim out there. One is a case of a clear and obvious Torah prohibition, the other is just simple racism.
To try and compare these cases is a fallacy – they aren’t even in the same moral ballpark. I truly don’t mean this to be in an insulting manner but if you really don’t think there is a moral problem with homosexuality then are you a religious Jew? If not then for the sake of not confusing other readers here maybe you should explain that cleary.