Do you understand what is being said here ?
"All this was as it should be if one understood Adams' growing problem of unifying the colonies behind some incontrovertible event that would make it clear to any American colonist that life under the British was utterly impossible. Adams, of course, was familiar with all the rabble-rouser charges against him and knew also that many of the Middle Atlantic and Southern colonists, sympathetic and active in the colonial cause, regarded him as an inciter of mob actions when it suited his political purposes. But this time he had something to go on. He was fresh from a meeting of the Provincial Congress that had just decided, not without his guidance, "that should any body of troop with artillery and baggage, march out of Boston, the country should instantly be alarmed, and called together to oppose their march to the last extremity. Adams would be willing to take a chance on the expeditionary forces of the nineteenth having artillery or baggage with them."
In so many words you are being told that after 10 years of preparation and practice with the Boston mob, Sam Adams carefully stage managed a propaganda incident that was sure to unite the colonies behind his far more radical, and unpopular, plan of independence instead of further attempts at redress.