Embedded Player Some media observers are questioning why important players -- including the White House -- didn’t notice that the original and controversial video clips of former Department of Agriculture employee Shirley Sherrod had been edited. Host Michel Martin speaks with blogger Richard Prince, author of "Journal-isms" an online publication about diversity issues in the media, and Andy Carvin, senior strategist for NPR’s Social Media desk about the ethics of airing videos found on the Web, and the vetting of information found on social media sites.