Hitler killed people before he assumed the Chancellorship. He killed people before day zero and continued from beyond the grave. He didn’t beginning killing in earnest until 1939, admittedly, but he had lots of time to warm up.
You are, of course, correct. But AH’s pre-1939 killings were at about the same volume and publicity level as Mr. & Mrs. Bill Ayers and all the other people who promoted ObaMao. IOW, they were swept under the rug and hardly anybody cared or even knew about them.