The British did a lot of terrible shit, and a bunch of shit that were clear and obvious violations of Colonial English rights...

... but the Boston Massacre wasn't one of them.

As for Kent State:

• The Communist """""peace activists""""" tried to burn the ROTC building down with everyone inside. Casualties from the burning down of the building were zero because the cadets reacted quickly.
• The Ohio National Guard's unit commanders were criminally incompetent and disorganized.