I have trouble applying the 'whistle-blower' label to someone who just disagrees with the way our country is structured and operates.

America isn't easy. America takes work.

It's not about the stuff. The issue is how we use that stuff and how do we train people to use that stuff. Do we use that stuff to confront people who are protesting in a community? Do we use a sniper rifle to see closer in a crowd? That's where it breaks down.

Serious debates are taking place about how law enforcement personnel relate to the communities they serve, about the appropriate use of force.

Unfortunately, in places like Ferguson, in New York City and in some communities across this nation, there is a disconnect between police agencies and the citizens they serve, predominately in communities of color.

I worry a bit about the unknowns when it comes to travelers to the war zones in Syria and Iraq. Who don't I see? And I worry about the people who may be in their basements radicalizing that I can't see.

They do not want people committing violence, either in their community or in the name of their faith, and so some of our most productive relationships are with people who see things and tell us things who happen to be Muslim.

Do not let fear become disabling. That is what the terrorists want. They want you to imagine them in the shadows; they want you to imagine them as something greater than they are.

The threat here focuses primarily on troubled souls in America who are being inspired or enabled online to do something violent for ISIL.

The Chattanooga killer was inspired by a foreign terror organization. It's hard to entangle which particular source... there are lots of competing poisons out there.