One of the nation's top abortion-rights groups has a problem with this year's Super Bowl ads.NARAL Pro-Choice America, a leading advocacy group on the issue of abortion, started firing a string of tweets about ads running during Super Bowl 50 on Sunday night, criticizing several in particular as "transphobic" or "sexist."The group had announced it would be live-tweeting the event to call out "sexist" advertisers and their creations.