Of all the controversial emails stolen from the DNC's network and leaked online, arguably none was more damaging than a message related to religion.
On May 5, the week after Hillary Clinton effectively wrapped up the nomination, one DNC staffer raised the prospect of someone making an issue of Bernie Sanders' faith. If voters in Kentucky and West Virginia were led to believe that the senator is an atheist, it "could make several points difference" in the results, the staffer said.
There's no evidence any kind of plan was ever hatched, and according to Sanders himself, the senator is Jewish, not an atheist. But the fact that such a topic was even discussed in this way is impossible to defend.
There are, however, limits to the pushback. Don Trump Jr., for example, appeared on CNN yesterday, and seemed eager to discuss this controversy. Referencing the May 5 email, Trump, in his capacity as a surrogate for his father's Republican candidacy, told Jake Tapper:
"If Republicans did that it would be disgusting and that's what you're going to see in a Clinton administration. This sort of divisiveness has to stop. They should be ashamed of themselves.
"And again, if we did that, if the RNC did that, if my father's campaign did that they'd be calling for people to get the electric chair."
Actually, it's a funny story, because whether he realizes it or not, his father's campaign has actually done this more than once. In fact, Trump's actions are worse: he didn't just talk about the possibility of attacking a rival's faith in a private email; he explicitly went after others' religious beliefs over and over again.