Every day we are bombarded with bad news: bombs exploding at airports and concerts, refugees fleeing from war-torn countries, people flooded out of their homes, individuals overdosing on drugs. It’s enough to make you weep. It’s enough to make you depressed.

But then I saw something on the CBS news a couple of weeks ago about Mr. Rogers, the creator and star of the children’s program, Mr. Rogers’ Neighborhood. He told the children something his mother had said to him when he was a child and was afraid when he saw bad things happening around him: “Look for the helpers.”

When you see the aftermath of a terrorist bombing, look for the helpers; that is, look for the people com...

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