good evening. we begin, tonight, with the national showdown under way at this moment over money, health and politics. millions of people across this country, fired up and taking sides. the issue? on one side, the cancer organization that gave us pink ribbons to fight breast cancer. on the other, planned parenthood, where so many women get free tests for treatment. what happened? abc s claire shipman takes us into the heart of this exploding story tonight. claire? reporter: diane, the firestorm erupted hen the susan g. komen foundation, as you know, the nation s largest breast cancer charity, announced that it would stop giving funds to planned parenthood for breast cancer screenings. and the controversy shows no sign of abating. that ubiquitous pink ribbon, for decades, uniting women in the greater good, is sporting a black eye today. thousands of women saying they will no longer support the komen foundation or buy pink. women like monique benoit, who benefited from a plann