BYRON YORK: Obama’s Paris snub wasn’t an oversight.

Then came the unity march. No, it was not essential that Obama himself attend. But there’s no doubt he should have sent Vice President Joe Biden — why is there a VP, if not to go to big foreign events? — or at least Secretary of State John Kerry.

Even as the march wound its way through Paris, the White House sent out yet another sign of its unseriousness. On Sunday morning, the press office announced the president will host a “Summit on Countering Violent Extremism” on Feb. 18. The plan is to bring together “social service providers, including education administrators, mental health professionals, and religious leaders, with law enforcement agencies to address violent extremism as part of the broader mandate of community safety and crime prevention.”

As the world watched images of black-clad, AK-47-wielding terrorists killing Parisians, Obama proposed to meet the threat with social service providers.

So when the president chose not to attend the Paris march, nor to send the Vice President or Secretary of State, the problem wasn’t a tin-ear sense of public relations. It was Obama’s actual attitude toward the terror threat facing not only Europe but the United States. We’ve dealt with the big stuff, Obama has declared, now let’s move on.

It sounded good — until the bullets started flying.

Well, it sounded good to some.