dec 11, 1773 - The Boston Masaccre
The Boston Massacre was an event where British soldiers killed three civilians in Boston. This was the first event of Britain outright killing innocent Americans, three of them immediately, and two from injuries. Even though it was a provoked attack, the average American would have no idea, because of how the event was shown to be completely unprovoked. The provoking that was done was relatively minor, only snowballs and a few rocks being thrown. This spread a lot of distrust of British soldiers, especially among the common American.
Added to timeline:
The American Revolution