My submission is Fred Rogers AKA Mr. Rogers
He reminded people that even in the worst of times, there were still nice people doing nice things.
He stood up to Congress and argued that recording television shows with VHS was fair use, and that doing this allowed working families to sit together and watch TV together.
He was an ordained minister, but decided to take his messages of love and friendship to TV instead.
He believed that making the world a better place was everyone's responsibility.
And after he passed away in 2003 (he had stomach cancer), the press interviewed his son and begged for a story about Fred being mean. His son said, "I know that would make for a great quote, but the reality is that my dad was every bit the kind person that you see on TV, and I don't have any story for you about him losing his temper or being anything less than kind to me all of the time."