As a political concept, Revolution indicates a reversion of the political order back to previous structures, not an overt change to something unprecedented or unknown.
When the American colonists rebelled against Great Britain, they were reasserting their God-given rights as Englishmen. Their citizenship and bearing were based on historical precedent, from the Magna Carta of 1215 to the 1689 English Bill of Rights. In order to separate themselves from the British Crown, the Continental Congress denounced the artificial construct that their rights and liberties flowed from the Head of State and elected officials, an unnatural argument of political right that gave birth to novel tyrannies and modern dictatorships.
Therefore, any attempt to cast the American Revolution as radical is an unfounded distortion, undermining the Thirteen Colonies' fundamental return to natural law as an endowment of the Creator.
Following in the same legacy as the Boston protestors of 1773, the Tea Party Movement, of 2010 and beyond is not a radical movement seeking to upend the established political order. On the contrary, the movement wants to reaffirm and secure the blessings of liberty accorded to ourselves by God and natural right, encoded in the United States Constitution.
From its inception, the United States has been and remains a conservative, center-right nation. No wonder the vast majority of Americans have repudiated President Obama's statist agenda and have demanded repeal of his overt reach into our daily lives, from Obamacare, to expanding federal regulations into free markets, to successive yet unsuccessful corporate bailouts.