Why did the boston massacre happened?

I think the answers is that 'A Skirmish on March 5, 1770, between British troops and a crowd in Boston. After provocation (throwing snow/ice balls)By the colonists, British soldiers fired on the mob and killed five men. This event contributed to the unpopularity of the British in the years leading up to the American Revolution.
The Boston Massacre occurred on March 5th, 1770.''