Former Alaska Gov. Sarah Palin greets some of the thousands of motorcycle enthusiasts and military veterans participating in the Rolling Thunder rally on Sunday.
Chip Somodevilla/Getty Images
Sen. Rand Paul (R-KY) speaks during a Tea Party Town Hall meeting in February at the National Press Club in Washington. The freshman lawmaker is being hailed by civil libertarians for putting privacy concerns over the Patriot Act back in the spotlight.
Alex Wong/Getty Images