RALEIGH, N.C. — By now, the sixth week that the police and protesters have faced off in a series of political rallies called Moral Mondays, everyone knew what to do.

The singing stopped. Hands went behind backs. While hundreds of people watched from the rotunda that separates the House from the Senate chambers here, officers slipped plastic cuffs onto Duke University professors, ministers, teachers and union members, who were charged with trespassing and other minor crimes. Even a Charlotte newspaper reporter was arrested as he took notes.

At the end, 89 people went to jail. They were out by morning.

Week by week, Monday by Monday, since April 29, a growing coalition assembled by the N.A.A.C.P. has challenged the newly conservative Republican leadership in North Carolina, raising its voice against the loss of the state’s centrist government and what they see as diminished recognition of the poor and minorities.

“These folks have lost their constitutional minds and their moral minds,” said the Rev. William J. Barber II, the president of the North Carolina N.A.A.C.P. and the force behind the protests. “We can no longer allow the ultraconservatives to have the moral megaphone.”