When Will We Ever Learn?

With the latest school shooting in Oregon, this one line from Pete Seeger's antiwar song kept coming to mind:

When will they ever learn?

But often Pete and others would change that last line the last time through to

When will WE ever learn?

In memory of the latest names added to the tragic list, here is Joan Baez's version. When will we work to end this war that is happening in our own nation with the victims being innocent people like any of us?