I would offer Richard Nixon as an example of a tragic hero, which is what John Proctor is in The Crucible.
President Nixon gave into temptation, a form of cheating and betrayal for the sake of power. The Watergate Scandal dominates the Nixon legacy. Like John Proctor who gives into his feelings for Abigail and betrays his wife, Nixon, a good President with many accomplishments, including getting the United States out of Vietnam and improving relations with China is shadowed by one event.
Like Proctor, who surrenders his life, Nixon had to surrender his political life, he resigned. John Proctor, a good man, who was a stable member of the community, a good provider, and husband, like Nixon, lost all credibility and integrity in the community.
Nixon and Proctor both good men, who engaged in different forms of conspiracy and betrayal, are led to the same result; the end of trust, the inability for those around them to trust them ever again.
I suspect you would have to define "hero" to get a really useful answer to this one. In some ways, Jimmy Carter was similar. He admitted to lusting in his heart, as Proctor clearly did. That heart was clearly a good one, as evidenced by his devotion to building houses and helping people since his presidency. However, he also waffled back and forth, as Proctor kind of does. He publicly suffered for his beliefs, as Proctor does.