Who tells us what we were not supposed to know? On Saturday we met that figure in his oldest form — the Hebrew prophet who walks up to the king with no army and says "thou art the man." This episode meets him in ours: Daniel Ellsberg, Edward Snowden, Julian Assange — and the single 1917 law turned against all three, not for selling secrets to enemies, but for telling Americans what their own government was doing. Underneath runs the deeper argument of the series: the Constitu