Twitter Censors Blackburn Senate Ad Criticizing Planned Parenthood's Selling of Baby Body PartsBy Brandon Showalter, Opinion writer and social commentator CommentRepublican National Convention Committee on Resolutions Co-Chairman U.S. Rep. Marsha Blackburn (R-TN) at the Republican National Convention in Tampa, Florida, August 28, 2012. | (Photo: REUTERS/Mike Segar)Follow Brandon Showalter on Facebook: BrandonMarkShowalter Follow Brandon Showalter on Twitter: @BrandonMShow