Update: Faced with over 1000 union supporters prepared to engage in non-violent civil disobedience, the move to arrest them has been halted.
From AFL-CIO blog, at 4:40 EST:
Police are expected to begin arrests in less than a half hour at the Wisconsin state capitol in Madison, following Gov. Scott Walker’s (R) order to clear the building. A group including clergy have pledged to take arrest peacefully rather than leave. Watch a live video stream here and follow breaking developments on Twitter. The AFL-CIO’s Eddie Vale on the ground in Madison says as the arrests take place Dr. Martin Luther King Jr.’s final speech, in support of striking Memphis sanitation workers, will be playing.