Task: Question Answering
Input (English): Passage: Around 6:30 pm the soldiers of the 6th Regiment began assembling. Their armory, located on Front Street across from the Phoenix Shot Tower, consisted of the second and third floors of a warehouse, with the only exit being a narrow stairway through which no more than two men could walk abreast.The men were met with jeers by a crowd of 2,000 to 4,000. This escalated into paving stones thrown through the door and windows of the building. Soldiers who subsequently arrived were beaten and driven away. Additional police were sent for in hopes of clearing the way and relieving the troops of the need to use force against the crowd, but those who arrived were unable to effect any order, and were forced to shelter in the armory along with the soldiers.Shortly after 8:00 pm, Colonel Peters ordered three companies of 120 men of the 6th to move as commanded by the governor and General Herbert to Camden Station. As they exited, they were assaulted by stones from the crowd, believing those of the 6th Regiment were armed only with blank cartridges. The troops returned fire, with live ammunition as they were equipped, and the frightened crowd retreated west across Fayette Street Bridge.Given the ongoing clashes, the men of the 6th Regiment, Company B, being the last of the formation to leave the armory, marched south, by way of Front Street, and then west along Baltimore Street, in order to avoid the crowds.The crowd regained their resolve and, as the body marched near Harrison and Frederick streets, they were attacked in the rear and made to halt by the pressing of the crowd. Without orders, some soldiers fired on the crowd, killing one and wounding between one and three. The crowd shrank back and the soldiers were allowed continue until they had advanced to the offices of the Baltimore American newspaper, near Holliday Street, where an order was given to halt and two volleys fired into the crowd. They were forced to halt a third time as they turned onto Charles Street, and again fired on the crowd near Light Street. There two men and one boy were killed. From there they followed Charles to Camden Street and on to the station. 
Question: Who shot and killed two men and one boy?
Output (English): 6th Regiment.