The only abuse of terms is by people who have difficulty or confronting the political and moral reality of what's happening. Holocaust scholars have already said that drawing these parallels in these specific circumstances is needed to prevent a reprisal of violence and genocide:
You've really gone off the rails if you think enforcing immigration law, as all countries do and the US has done for decades, is going to lead to genocide.
https://www.nybooks.com/daily/2019/07/01/an-open-letter-to-t...