The Gadsden flag, that includes a rattlesnake and the phrase "Don't Tread on Me

https://andreskcuw244.lumenforgex.com/posts/flags-of-honor-the-symbolism-behind-civil-war-colors-and-emblems

The Gadsden flag, providing a rattlesnake and the word "Don't Tread on Me," used to be followed by way of some Confederate sets as a image of resistance towards perceived oppression.