For my money, most of the responsibility is not on the gentrifiers, but on urban planners and the like. However, what I think gentrifiers should do is not a "just"; I think they should work to make themselves part of the existing neighborhood, patronize businesses that are maybe designed for a somewhat different income level, and agitate for keeping some "affordable" housing near them, as opposed to seeing their neighborhood become more and more homogeneous. I don't like "they should just not move in," but I do see a huge difference between moving in to change it and moving in to be part of it.

I moved into my current neighborhood in 1984 and there is no doubt that we gentrified it somewhat when we moved in. And I had a much less sophisticated understanding of gentrification then. However, I have always been pleased by how slowly and incompletely it has gentrified, and I do what I can to keep it that way. To the extent we've lost people of color, it has mostly been because their houses became worth so much they chose to take the money and run, which is not something I can complain about.