Sounds like a good thing, doesn't it?
Put "ethnic" in front of it, and it loses its innocence.
OK, for my purposes I stripped it back to just the one word, with a capital "C" for emphasis, because the "Cleansing" in Ghosts of Innocence is even more extreme. The Imperial navy appears overhead and reduces every city, town, and village to molten glass.
Picture Independence Day, but with rather fewer buildings left standing.
This is what happened to Shayla's home world.
This is why she's out to get the Emperor.