Illustration from a 1770 broadside published after the Boston Massacre. The initials on the coffins are those of massacre victims Samuel Gray, Samuel Maverick, James Caldwell, and Crispus Attucks. (Library of Congress, American Memory Collection)
At 7:30 tonight there will be a re-enactment of the Boston Massacre. An unruly colonial mob will be meeting at the statue of Sam Adams (for authentic unruliness you may want to drink a Sam Adams) in front of Faneuil Hall to march up and confront the British soldiers in front of the Old Statehouse. <spoiler alert> Some of the mob will meet with an untimely demise.
The Boston Gazette and Country Journal listed the following casualties on 12 March, 1770:
"The dead are Mr. Samuel Gray, killed on the spot, the ball entering his head and beating off a large portion of his skull.
A mulatto man named Crispus Attucks, who was born in Framingham, but lately belonged to New Providence and was here in order to go for North Carolina, also killed instantly, two balls entering his breast, one of them in special goring the right lobe of the lungs and a great part of the liver most horribly.
Mr. James Caldwell, mate of Capt. Morton's vessel, in like manner killed by two balls enterng his back.
Mr. Samuel Maverick, a promising youth of seventeen years of age, son of the widow Maverick, and an apprentice to Mr. Greenwood, ivory-turner, mortally wounded; a ball went through his belly and was cut out at his back. He died the next morning.
A lad named Christopher Monk, about seventeen years of age, an apprentice to Mr. Walker, shipwright, wounded; a ball entered his back about four inches above the left kidney near the spine and was cut out of the breast on the same side. Apprehended he will die.
A lad named John Clark, about seventeen years of age, whose parents live at Medford, and an apprentice to Capt. Samuel Howard of this town, wounded; a ball entered just above his groin and came out at his hip on the opposite side. Apprehended he will die.
Mr. Edward Payne of this town, merchant, standing at his entry door received a ball in his arm which shatered some of the bones.
Mr. John Green, tailor, coming up Leverett's Lane, received a ball just under his hip and lodged in the under part of his thigh, which was extracted.
Mr. Robert Patterson, a seafaring man, who was the person that had his trousers shot through in Richardson's affair, wounded; a ball went through his right arm, and he suffered a great loss of blood.
Mr. Patrick Carr, about thirty years of age, who worked with Mr. Field, leather breeches-maker in Queen Street, wounded; a ball entered near his hip and went out at his side.
A lad named David Parker, an apprentice to Mr. Eddy, the wheelwright, wounded; a ball entered his thigh."
After the massacre, a meeting of the town of Boston voted on and sent the following message to the English authorities in Boston:
"That it is the unanimous opinion of this meeting that the inhabitants and soldiery can no longer live together in safety; that nothing can rationally be expected to restore the peace of the town and prevent further blood and carnage, but the immediate removal of the troops; and that we therefore most fervently pray his Honour, that his power and influence may be exerted for their instant removal."
The authorities acceded to these wishes, at least temporarily, and the newspaper account continues:
"The wisdom and true policy of his majesty's council and Col. Dalrymple, the commander, appear in this measure. Two regiments in this populous city; and the inhabitants justly incensed: Those  of the neighboring towns actually under arms upon the first report of the massacre, and the signal only wanting to bring in a few hours to the gates of this city many thousands of our brave brethren in the the country deeply affected with our distresses, and to whom we are greatly obliged on this occasion---No one knows where this would have ended and what important consequences even to the whole British empire might have followed, which our moderation and loyalty upon so trying an occasion and our faith in the commander's assurances have happily prevented."
Quotes from "An account of a late military massacre at Boston, or the consequences of quartering troops in a populous town, March 12, 1770." [New York, John Holt, 1770.]
A website on the massacre can be found here.