Here is a longer version of this:

“And people did this, just like you, you and me. These people did not come from another planet. [...] They were human beings, just like us. And it was not Hitler who arrested me, not Goering, not Goebbels. The grocer, the janitor, the tailor, the shoemaker, the baker, they suddenly got a uniform, a swastika armband, and there they were, the master race...”

From this site: https://www.nationalfonds.org/announcement/recollections-of-auschwitz-at-buch-wien-2021