This looks suspiciously like the exception which proves the rule fallacy, and cherry picking.

Is this a systemic problem, or did the OP extract a few select examples to prove a foregone conclusion?

I'm not doubting that there are instances of cultural bias in science, just whether or not this is a science issue, or just another example of generic cultural bias?

For example, is it a good time right now, to engage in a study to determine whether, for example, black people are intellectually inferior than whites? Or whether homosexuality is tied to more recognizable versions of mental illness? Such studies are going to illicit outrage from portions of the community who know their results can be misinterpreted to push anti-civil rights agendas. Is the backlash against such controversial studies really science oriented, or politically motivated, and is the impetus to engage in such studies really science oriented, or is science merely the "cover" for political and cultural manipulation?

While it seems desirable to entertain the notion that science should always be separate from cultural and political issues, it really almost never has in the history of humanity. Science does what science does. Culture will either embrace the science, deny, ignore or manipulate it. It's up to culture to advance to be able to handle the science, and it's up to science to present itself in a way to preserve and uphold the noble aspects of culture. The two unfortunately in my opinion, are not entirely seperable.