We take a look at the GOP Presidential campaign in Iowa this week. Newt Gingrich responds to recent attacks by Mitt Romney, Rick Perry touts his outsider credentials and criticizes president Barack Obama’s support of the troops, and more.
"We all bring our own filters to our world. There is nothing wrong with that, especially if we use an appreciation of each other's filters to understand how our complicated and sometimes clashing life experiences define the American idea."
Gwen Ifill is moderator and managing editor of "Washington Week" and co-anchor and managing editor of the "PBS NewsHour." The best-selling author of "The Breakthrough: Politics and Race in the Age of Obama," Gwen has covered seven presidential campaigns and moderated two vice presidential debates.