Wendy Davis was a Democratic state senator who was little known beyond Texas when she burst onto the national political scene in the summer of 2013, staging a one-woman filibuster to stop passage of a tough anti-abortion law.
Within hours, the pink athletic shoes she wore had become internationally iconic as accounts of her marathon effort were carried in real time by social media around the world. Celebrities — actors Mia Farrow and Henry Winkler, comic Ricky Gervais — were among those weighing in with laudatory encouragement on Twitter.
Even President Obama chimed in his support.
But on Friday, when Davis again became a trending — or leading — topic on Twitter,...