A government that uses rubber bullets and tear gas against its own people -- who want nothing more than a change of leadership after 30 years of one-man rule -- has no future. President Obama would be standing for American values if he encouraged Hosni Mubarak to leave office now. Mubarak (and his son, it is almost needless to say) have no credibility, and the U.S. will have no credibility if it doesn't support the aspirations of these frustrated protesters. Will the Muslim Brotherhood follow in the wake of Mubarak's downfall? Not necessarily. But the U.S. will make that possibility less remote if it doesn't stand with the people now.
I'm not downplaying the threat the Muslim Brotherhood poses, to America or to Israel. And I fear for the future of the Israel-Egypt peace treaty. And there is a chance this regime could survive, for a while. But these facts are overwhelmed by the reality on the streets.