First it's the homeless and the "mentally ill," then being LGBTQ+ will be considered a mental illness, then your beliefs and opinions will be considered a mental illness. They already declared Trump Derangement Syndrome as a mental illness. It doesn't matter if you are a straight white male, you should be scared and fighting back.
The Nazis didn't start with death camps, that was just their final solution after other methods of removing people they didn't like weren't efficient enough. And not all concentration camps were death camps. Some of them were just there to hold "undesirables."