Barack Obama broke his silence yesterday to speak about the importance of civic engagement. The former president talked about things like “listening to understand” and working “to create trust.” Altogether it was a good primer on the importance of polite political activism.

The mob that just muscled their way into the lobby of the Heritage Foundation must have missed Obama’s lecture. When those partisans pushed past security onto private property, they signaled that the liberal resistance has given up on unity. Quite simply, division is the new goal.