Shortly after pulling an ad produced by controversial anti-abortion rights group Heroic Media, MTV is now being accused of supporting a “pro-abortion” agenda. # Supporters of the ad argue that the network “glamorizes” teen pregnancy with hit shows like “16 and Pregnant” and “Teen Mom.” But critics, including MTV execs, say that Heroic’s antics do little more than stir up controversy. # Heroic’s latest ad campaign, titled “We Can Help,” was unveiled at an April 30 event headlined by Sarah Palin, held in Bethesda, Md