Patriots Day, also known as Patriot's Day, is the anniversary of the Battles of Lexington and Concord, and is celebrated annually on the third Monday in April in the U.S. state of Massachusetts. It is the anniversary of the American Revolutionary War, and the Boston Marathon is held locally on Yes Day. And the Boston Red Sox hold their annual event at Fenway on Yes Day.In 2013, the Boston bombings occurred on Patriots Day.

The Boston Marathon is held annually in Massachusetts on Patriot's Day, the third Monday in April, which commemorates the American Revolutionary War. U.S. President Barack Obama also mentioned this in his speech on that day, "Patriot's Day is a day for a free Boston to celebrate its history". However, because of its implication of independence, in recent years it has become an "exclusive day" for demonstrations by right-wing groups and anti-government organizations within the United States. a