First they came, but for whom?

[unbibium]

Hey, remember that "First They Came" poem? It's eight lines about four times they came for people. The first three times, he follows up with why he said nothing. The fourth time, well I won't spoil the ending.

Without looking it up, can you remember who they came for, and in which order?

For bonus points, did they come for anyone before that first group? Someone the author might not have even noticed, or thought worth mentioning after it was all over?