NY Times’ gun violence blogger reloads at Bloomberg-backed TheTrace.org

For more than a year, Jennifer Mascia tried to track every gun death in America – close to 50,000 of them. Every day, The New York Times blogger scoured the Web in an attempt to tell all those stories. She searched "shooting," "woman shot," "child shot," "man shot," "accidentally shot" and then waded through the daily carnage in pages and pages of search results. "The Gun Report was like climbing a mountain every day,” she says. "It took four hours each day and on the weekends there were so many shootings it took 10 hours." In this excerpt from America Tonight, Sheila MacVicar reports on what Mascia and her colleague learned from their reporting, and how she's trying to rebuild an effort to quantify gun violence and tell victims' stories at the Michael Bloomberg-supported news site TheTrace.org.