Keep in mind, just because someone cares about the history of things like slavery, Jim Crow and other forms of oppression that minorities have been subjected to, that doesn't automatically mean they will also consider cultural appropriation a valid concern. I think you are drawing a straight line between the two, assuming that someone being skeptical of CA and being skeptical of where it is really coming from, is also going to bee dismissive of these other concerns. Which just isn't the case. I think people are also assuming if you don't buy into CA, you are a conservative, which is also not true (I am definitely not a conservative). I have watched over the past years as the extremes have become more extreme. But I haven't changed my position on any political issue. I still vote for democrats, still believe in social programs, still believe in racial equality, and want to see more economic equality in the country. I just don't think fretting over cultural appropriation gets us to any of that. If anything I think it makes it harder because it hardens the lines between different groups of people. It is going to be very hard to get everyday people to empathize more with people outside their own culture, if they are afraid of crossing the boundary because they might get labeled an appropriator (and being labeled that can have a very negative impact on a person's life and even their livelihood).