Then again, we're in Boston. Let's think Colonial stuff...
-A young boy admitting to his father that he can't tell a lie, he [example] s--- in the stew pot.
-A quest objective requiring the player to monitor enemy movement, and light a lantern one if by land, two if by sea.
-An old timer musing "This never would have happened if the British had won..."
-Happening upon [insert prime antagonist faction here] mowing down a bunch of civilians, as a reference to the Boston Massacre.
-A couple of people swimming in the harbor, trying to drink tea, going "are you sure this is how they did it?"