I learned that gun owners share ideas, images of firearms and videos, signaling to others the accepted norms, values and activities of gun subculture. They use hashtags like #freedom or #2A, for the Second Amendment. They post key words and phrases such as "take our rights away," "patriot class," and "lock 'n' load." One gun owner shares tactical advice on what to do if you ever encounter zombies. Others showcase their rapid-fire skills with semiautomatic guns; explain how to clean a firearm; complain about political parties and gun control organizations; and compare gun types, such as a "Glock 17 vs. Ruger SR9."