Irish nationalist groups active in the U.S. – the Fenians, Clan na Gael and, later, Irish Northern Aid – participated in these American St. Patrick’s Day parades, proudly wearing green to demonstrate their nationalism and the connection to past nationalist groups such as the United Irish.

March 17th is the day of green, shamrocks, and leprechauns. But St. Patrick's Day is so much more than a color, and the many symbols have deeper meaning. Explore these cool facts about St. Patrick's day and celebrate with a whole new perspective.