Are you watching HBO’s production of McCullough's biography “John Adams”? If not, you might want to rent it later. The segment devoted to the 1770 Boston Massacre is fun to watch from a trial attorney's point of view, as the hero demonstrates several valuable advocacy techniques.
Adams, then only 34, defended the indicted soldiers and won the case. In HBO's telling, he lines up his witnesses very much as the doctrines of primacy and recency would advise him to: opening and concluding with his most valuable witnesses, wedging witnesses of lesser importance in the middle.
Also, in final argument, Adams connects the facts of the case with a universal appeal to the rule of law. Here, even though he was representing the soldiers, he was clearly speaking to jurors who were all too aware of English encroachment on their rights.
For those interested in reading up on the Boston Massacre trial, Hiller B. Zobel has written a classic account of the trial, which recounts from actual notes the arguments of counsel as well as engaging summaries of the testimony and historical background.
You might also enjoy browsing this excellent website about the case, created by law professor Douglas O. Linder.