Here's a little ditty from the Department of Justice. The DOJ's Terrorism and Extremism Glossary of Terms.
Such terms as "Monetary Realist", "Anti-Defamation League", "Constitution Party", "Constitutionalist", "Gun Owners Of America" and "Republic of Texas" are all explained for you. You will be able to recognize terrorists from their manner of speech.
Way To Go, DOJ! And don't forget to turn in your neighbors, just like the White House asked last year with their very own email@example.com big brother e-mail address.
Be a good little comrade, I mean, uh citizen and we may let you keep some of your income!