The Statue of Liberty is the official symbol of the Libertarian Party, but the porcupine is used to represent libertarianism because it is a defensive animal that doesn't harm anyone who leaves it alone. For this reason, many libertarian groups and publications, including the Free State Project, use the porcupine for a mascot.
The libertarian porcupine was originally designed by Kevin Breen in 2005-2006 mimics the Republican Elephant and Democratic Donkey. It has since been used to represent many local libertarian groups, and it has been included on major libertarian publications.
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