So, I recently came up with an idea involving humanity leaving Earth to colonize Mars. Millions of years later, a race of sapient crows evolve and form a society on Earth. The story involves some astronauts (I picture two to four) coming down from Mars to see how the earth has evolved, and encountering a tribe of these intelligent birds, which they dub Corvus sapiens. The corvids' society was pretty fun to come up with. I had a field day imagining what their clothing, buildings, and religion would be like, as well as what animals they would domesticate. But what I'm having trouble with is what the gender and races of our human astronaut protagonists should be, especially since this takes place in the future, where both gender and racial equality will be stronger. I feel like no matter which combination I would come up with, people would get offended and call me racist or sexist. (Two Asian men? A white woman, two black men, and a Hispanic man? Three black women?) Anyone know which combination would offend people the least?