This is the iconic Gadsden flag, a historic American banner defined by its bold bright yellow background, coiled black-and-yellow timber rattlesnake resting on a small patch of green grass, and the famous "DONT TREAD ON ME" serif text printed below. Originating during the American Revolutionary War, this flag has become a widely recognized symbol of American patriotism, individual liberty, and limited government, popular with history enthusiasts, political activists, and flag collectors.