The Gadsden flag is a historical American flag with a yellow field depicting a timber rattlesnake coiled and ready to strike. Beneath the rattlesnake are the words: “Dont Tread on Me”, all in uppercase letters. Some modern versions of the flag include an apostrophe.
The flag is named after politician Christopher Gadsden (1724–1805), who designed it in 1775 during the American Revolution. It was used by the Continental Marines as an early motto flag, along with the Moultrie flag. Its design proclaims an assertive warning of vigilance and willingness to act in defense against coercion. This has led it to be associated with the ideas of individualism and liberty. It is often used in the United States as a symbol for right-libertarianism, classical liberalism, and small government; for distrust or defiance against authorities and government; and occasionally co-opted for right-wing populism or far-right ideology.