The Gadsden flag, proposing a rattlesnake and the word "Don't Tread on Me

https://troynvgr831.moderncairn.com/posts/celebrating-heritage-the-importance-of-civil-war-flags-in-today-s-society

The Gadsden flag, presenting a rattlesnake and the word "Don't Tread on Me," became adopted via a few Confederate devices as a symbol of resistance towards perceived oppression.