We need a definition of "un-American"

This is for Nancy Pelosi, since she seems to think raised voices and an angry electorate is "un-American." The following is from a book by Gordon Wood and describes what happened when congress voted to double its own salary in 1816:

Now the people had a chance to make their resentment felt. Throughout the country public meetings composed of both political parties denounced the law that had raised the salaries of congressmen. Several state legislatures along with Fourth of July orators bitterly condemned it. Glasses were raised in criticism; the compensation law, noted one New York editor, was “toasted until it is black.” In Georgia opponents even burned the members of Congress in effigy.

Critics of the raise were especially incensed at Congressman Wright’s indiscreet comment about not being able to enjoy a good glass of wine and cited it over and over to great effect. Popular outrage was unprecedented, and the reputation of Congress was severely tarnished. Even congressmen who had voted against the law had to promise humbly to work to repeal it and to return the salary they had already received. In the fall elections of 1816 nearly 70 percent of the Fourteenth Congress was not returned to the Fifteenth Congress. In January 1817 a chastened lame-duck Fourteenth Congress met to debate the issue of exactly what representation meant, and by and large it determined that the people had every right to instruct their congressmen.