It wasn’t an isolated incident.  In the decade leading up to 1776, there was a pattern of disrespect from the British crown toward the American colonies.  This played out in handfuls of skirmishes and events.  Despite the best efforts of the “American” Congress to find common ground with the British king and Parliament, they were continually denied.  And this, while their accustomed rights were being stripped by the British empire.  This didn’t sit well with the citizens because many had fled political or religious persecution in their journey to America.   America was to be a land of hope, freedom, and opportunity.  The actions of King George III threatened all three.  Though Britain possibly justly sought to recoup her debts of war by taxation, the way she went about it and her attitude toward Americans shifted the scale far to one side, which would bring matters to a tipping point.

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References: Thought.co and History.com