Alexander Tyler, a Scottish history professor at the

University of Edinburgh on the fall of Athenian Republic

I just found out that when you begin to type Tyranny into tags on a Tumblr post the suggestion is "#homeland security"

According to the DHS's definition of "Right Wing Domestic Terrorist" Thomas Jefferson would be considered a terrorist in today's society. 

Excerpt from A Department of Homeland Security Science and Technology Center of Excellence document "National Consortium for the Study of Terrorism and Responses to Terrorism": 

“Extreme Right-Wing [terrorist groups]:

groups that believe that one’s personal and/or national “way of life” is under attack and is either already lost or that the threat is imminent (for some the threat is from a specific ethnic, racial, or religious group), and believe in the need to be prepared for an attack either by participating in paramilitary preparations and training or survivalism. Groups may also be fiercely nationalistic (as opposed to universal and international in orientation), anti-global, suspicious of centralized federal authority, reverent of individual liberty, and believe in conspiracy theories that involve grave threat to national sovereignty and/or personal liberty."

The following quotes from Jefferson clearly indicate that he was a terrorist:

“For a people who are free, and who mean to remain so, a well-organized and armed militia is their best security.”

"Rightful liberty is unobstructed action according to our will within limits drawn around us by the equal rights of others. I do not add 'within the limits of the law' because law is often but the tyrant's will, and always so when it violates the rights of the individual."

"I would rather be exposed to the inconveniences attending too much liberty than those attending too small a degree of it."