To say what you believe in a manner that bespeaks the determination with which you believe it. Because contrary to the wisdom of the bumper sticker, it is not enough these days to simply QUESTION AUTHORITY. You have to speak with it, too.
This final stanza now reflects how in this generation we live in, generation before may try to cut the legs we stand us but to question themselves, they act like they know everything similar to the white men from the previous poem but we got to question them in what they do, not on what we do.