HDS of Pittsburgh industrial factories with smoke rising all around. Row of homes with smokestacks lined up behind. Outside steel factory, train pulling up. Interior of steel factory with sparks flying. Hot ingot being lifted by a crane. Steel workers walking in the factory yard. Line of police in front of large group of striking workers holding signs. Police clash with strikers, hitting them with batons and firing guns into the air. Workers mount a counter offensive, discharging smoke guns. Workers, in full riot mode now, tipping over a car. Shot of several cars pushed in a small river. Bonfire ablaze with workers throwing more to the flames. Workers masked with bandanas carrying sticks. Workers running away from police down street. Police loading men into a paddy wagon. Police forces getting control of situation, picking up hurt men from the ground.