Thousands of people are filling the streets around the Wisconsin Capitol to protest a Republican bill that would strip most public workers of almost all their collective bargaining rights. Police have closed the streets to vehicle traffic in anticipation of the crowds.

Rallies have been going on nonstop for 12 straight days at the Capitol. "Billy Madison" star Bradley Whitford and Jeff Skiles, the co-pilot who helped land a passenger plane in the Hudson River two years ago, are scheduled to address protesters outside the building on Saturday afternoon.

The center of the protest is still the Capitol's ground floor, where throngs of people are blowing horns, beating drums and chanting "This is what democracy looks like!"