Elections come and go, but the season for political advertising sometimes seems to never end. Facebook users in California, for example, may have noticed ads in recent months showing a woman with duct tape over her mouth and text that warns: “Legislators are leaving sexual assault survivors from public universities out to dry.” The ads urge readers to sign a petition seeking to add public universities to legislation that would give students at private universities more time to sue their schools over sexual assaults. […] Now, California legislators are considering a proposal by Assemblyman Kevin Mullin that would require groups...