Excerpt:
In the midst of a presidential debate over Islam, civil liberties, and President Obama's national security policies on Tuesday night, Rick Santorum rolled out a notable statistic.
"There's four times as many acts of violence against Jews than there are against Muslims. I never hear the president talk about that."
It's a surprising figure—particularly as the Muslim community has been hit by a rash of hate crimes after the San Bernardino attacks earlier this month—but it's one that's grounded in federal data.