Well, according to a law school professor, pursuant to the Military Commissions Act, "Anyone who ... speaks out against the government's policies could be declared an 'unlawful enemy combatant' and imprisoned indefinitely. That includes American citizens."
And according to an FBI memo, peace protesters are being labeled as "terrorists". Anyone who disagrees with the "acceptable" way of looking at things is a terrorist. For example, the following is considered terrorism or suspected terrorism in modern America:
Questioning war (even though war reduces our national security)
Criticizing the government's targeting of innocent civilians with drones (although killing innocent civilians with drones is one of the main things which increases terrorism.
Asking questions about pollution (even at a public Congressional hearing?)
Liking online privacy
Paying cash at an Internet cafe
Asking questions about Wall Street shenanigans
Supporting Ron Paul or being a libertarian
Being anti-tax, anti-regulation or for the gold standard
Creating alternative currencies
Stocking up on more than 7 days of food
Investigating factory farming
In fact -- since 9/11 -- virtually all dissent has been equated with terrorism...