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

https://gregoryvqbt875.northstarcolumn.com/posts/buying-guide-what-to-look-for-in-quality-civil-war-flags-2

The Gadsden flag, providing a rattlesnake and the word "Don't Tread on Me," was adopted by way of a few Confederate devices as a image of resistance in opposition to perceived oppression.