Last week, more than 500 coal mine workers picketed in New York City, joined by a diverse army of other labor movement members and supporters. The mine workers, who extract coal for steel production, are now in the eighth month of their strike against Warrior Met Coal in Brookwood, Alabama. Their aim is to force Warrior Met to restore the pay, benefits, and schedules they had before their previous employer, Walter Energy, declared bankruptcy and auctioned off its assets in 2016.

On Thursday, the mine workers marched to the headquarters of BlackRock, the world’s largest asset manager and Warrior Met’s biggest shareholder. After the rally, five United Mine Workers of America (UMWA) members and the union’s president, Cecil Roberts, sat down in the street and refused to move. The six were handcuffed by the New York Police Department and arrested for their act of civil disobedience.

The striking workers brought their picket to the middle of Manhattan because they have been barred from gathering outside the Brookwood mines. On October 27, a Tuscaloosa County circuit judge issued a temporary restraining order stopping all UMWA picket activity at Warrior Met. The injunction, which has been extended through November 15, blocks strikers from gathering within 300 yards of any mine entrance or exit.