On 5th March 1770 outside the customs house on King’s Street, Boston, Private Hugh White was talking to some off-duty comrades when a passing Bostonian made a crack about the British soldier’s commanding officer – prompting Pvt White to clock the civilian across the side of the head. The off-duty soldiers made themselves scarce, leaving the private to deal with the fast-growing ring of angry Bostonians that soon surrounded him. White backed up against the custom house door – gun raised out of fear of what might happen next. The growing crowd heckled him, daring him to shoot.
Up the street, Captain Preston, commander of the custom house garrison, watched events unfold. The Captain was hoping that the situation would resolve itself naturally but soon the church bells started tolling and more men, many armed with clubs, started showing up and Preston knew it was high-time that he went to get his man. He led a corporal and six privates through the crowd, now numbering 300-400 strong, towards Private White but rather than just pulling the soldier out from the situation he ordered his men to form a semi-circle around him while facing the crowd, guns unfortunately loaded.