Pro-Trump supporters, left, argue with demonstrators after a Feb. 18 march in Los Angeles to protest the president's immigration policies. Sociologists say President Trump's actions and rhetoric are politically energizing both conservatives and liberals.
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Retiring Rep. Scott Rigell, R-Va. — seen here awaiting election results on Nov. 2, 2010 — says he wants to continue work in his soon-to-be-private life to inject more civility in American politics.
Republican presidential candidates Sen. Ted Cruz of Texas and businessman Donald Trump greet each on stage at a rally on Capitol Hill to oppose the Iran nuclear agreement.
A woman holds signs depicting the head of Republican presidential candidate and businessman Donald Trump as she waits to enter the auditorium to hear him speak on Wednesday in Derry, N.H.
Rep. Marcy Kaptur, D-Ohio, and fellow Democratic members of Congress hold a news conference to voice their opposition to the Trans-Pacific Partnership trade deal.
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Sen. Lamar Alexander, R-Tenn. (center), talks with Wallace Henson (left) while campaigning in Lawrenceburg, Tenn., on Aug. 5. Alexander fended off a Tea Party-backed challenge Thursday.
Sen. Rand Paul (R-Ky.) greets supporters during a tea party rally in front of the U.S. Capitol in June. Paul was a rising star in the tea party movement this year, filibustering a CIA nomination in March.
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State Sen. Chris McDaniel waves at supporters after announcing his candidacy for the U.S. Senate during a rally at the Jones County Courthouse in Ellisville, Miss., on Thursday.
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