America was divided, tense and angry in 1969, when Fred Rogers faced a U.S. Senate Subcommittee poised to grant President Richard Nixon his requests for deep budget cuts for public broadcasting.

The news was full of assassinations, riots and images from Vietnam. The pain even soaked into the gentle, calm, safe world of "Mister Rogers' Neighborhood."

Rogers told the senators why he kept telling children they were unique and special. But he also talked about fear, anger and confusion -- because that's what children were feeling. 

Then he read the lyrics of one of his deceptively simple songs: "What do you do with the mad that you feel, when you feel so mad you could bite? When the whole wide world seems oh, so wrong, and nothing you do seems very right?" 

The song stressed that kids can make good choices: "I can stop when I want to. Can stop when I wish. I can stop, stop, stop anytime. And what a good feeling to feel like this. And know … that there's something deep inside that helps us become what we can."

The senators nixed the cuts, and the Rev. Fred Rogers -- an ordained Presbyterian minister -- continued with his complex blend of television, child development and subtle messages about faith. The Senate showdown is a pivotal moment in "Won't You Be My Neighbor?", a Focus Features documentary just released to theaters nationwide.

"The bottom line for Fred Rogers was that the faith he had in God -- Christian tradition and his own beliefs -- infused everything that he did," said the Rev. George Wirth, a friend and pastor to Rogers for two decades. "He was not a grab you by the lapels man, obviously. He was more careful, and I would say prayerful, in terms of how he discussed faith."

In the documentary, Rogers summed up his approach: "Love is at the root of everything -- all learning, all parenting, all relationships. Love, or the lack of it. And what we see and hear on the screen is part of what we become." The space created by a TV lens, between himself and a child, was "very holy ground," he said.