Boston Tea Party was political protest by Sons of Liberty in Boston, Dec 16, 1773. Demonstrators, some disguised as Native Americans, in defiance of Tea Act of May 10, 1773, destroyed entire shipment of tea sent by East India Company. They boarded 3 British tea ships & threw 342 chests of tea into Boston Harbor. British government responded harshly & episode escalated into American Revolution. The Tea Party became an iconic event of American history.