The above have valid points, but let's look at racial and homosexual minority groups in the white U.S. macro-culture:
Homosexuals and certain non-white racial groups both are subject to minority status. This not only affects voting and representation in government, but it affects opportunity in competing with the majority groups who attain master status.
Both are targets of prejudice. This, of course, leads to various degrees of socio-economic treatment. For example, real estate agents have been known to keep minority groups out of white neighborhoods. Whereas it is more difficult to hide racial status, homosexuality can be more easily masked when it comes to socio-economical status (in this case, securing real estate.
Marriage and the military seems to be the front lines in the homosexuality debate, but immigration is the sticking point in the racial divide.
Race, in relation to issues like homosexuality or anything else for that matter, makes a huge difference. The reason for this is simple. Each culture and race have different notions of what is acceptable and unacceptable. So, if a race has homosexuality as part of it accepted or shared culture, then there would be little issue with homosexuality. However, if a group or race has had little exposure to homosexuality, then attitudes will probably differ. But if a race or group has a decidedly negative view of homosexuality, then there will be opposition.
In short, the point that I am making is that each society or race has its own set of values. There are very few universals. So, it is key to understand the cultural idiom of a group or race.
Race and culture have an impact on shaping attitudes towards homosexuality. If a particular race or culture deem homosexuality to be a choice of lifestyle, then there is a chance that the perception might be a negative one, for people are "choosing" a particular way of life. At the same time, this attitude might be lessened if a race or culture see the issue of homosexuality as no different than heterosexuality, as one of biological or neurological reality. Along these lines, if racial or cultural perceptions towards homosexuality cast aspersions on it, such as weakness or abnormality, this could also impact on it is viewed. In the final analysis, individuals will have to decide at what level cultural or racial attitudes help to shape their own perception of homosexuality. There might have to be some negotiation or straight out choice in the matter, and individuals must be prepared for such a reality.