Planned Parenthood is harnessing star power in a new effort to advertise abortion. But with its straw-man messaging, Planned Parenthood and its celebrity PR team are only preaching to their choir. They’re not converting anyone. On August 26, Planned Parenthood announced that it had collected the signatures of nearly 140 musicians as part of its latest campaign for abortion called “Bans Off My Body.” To boast about its supporters, the nation’s largest abortion provider purchased an ad listing the artists – from Lady Gaga to Ariana Grande – in Billboard magazine. Planned Parenthood began its campaign in June in response...