Whatever authorities can do to one social movement they can do to another one. Watch what's happening to truth-telling about the Israeli-Palestinian conflict. That could happen in the future to truth-telling about climate change: Individual spokespeople detained or deported without hearings, academic studies de-funded, a society of fear where organizations anticipatorily crack down on what they imagine the authorities would object to, and a general shut-down of truth. This episode tells some truth about the Palestinian conflict to illustrate the point, and goes on to say that the solution is to speak out. Cowering in fear becomes permanent if we don't.