Just because you tell a lie over and over again doesn’t make it true.

CHARLOTTE, N.C. — House Minority Leader Nancy Pelosi (D-Calif.) on Monday began the Democratic National Convention with a wide-ranging attack on Mitt Romney and the Republicans over everything from Medicare and immigration to women’s health and gay rights — themes that will echo loudly this week in the run-up to President Obama’s official nomination Thursday.

Speaking before hundreds of enthusiastic supporters at a breakfast for the California delegation, Pelosi sought to frame November’s elections as a clear choice between a Democratic Party that fights for the middle class and a Republican Party that would shower benefits on the wealthy at the expense of everyone else. […]

Speaking prior to Pelosi, several other prominent Democrats were similarly aggressive.

Rep. Jared Polis (D-Colo.) warned of Republican attacks on environmental and financial protections; Rep. Donna Edwards (D-Md.) said Republicans “clearly don’t believe in science” and “never took biology” — a naked jab at Rep. Todd Akin (Mo.), the Republican Senate candidate who recently made waves for claiming that women’s bodies prevent pregnancy during rape; and Rep. Xavier Becerra (Calif.), vice chairman of the House Democratic Caucus, went after Romney — who made many millions of dollars as the head of Bain Capital — for parking much of his cash in overseas tax havens.