Shields and Brooks on the politics of vaccination

Aired: 2/6/2015 | 0:11:39 | Clip
Syndicated columnist Mark Shields and New York Times columnist David Brooks join Judy Woodruff to discuss the week’s news, including the latest acts of terror by Islamic State, a speech by President Obama on the way religion, including Christianity, has been used to justify violence, and why some Republican politicians spoke against mandating vaccination in the wake of a measles outbreak.