In the movie ‘Tombstone’ with Kurt Russell – in which the incomparable Russell plays legendary Wild West figure Wyatt Earp – he explains his law enforcement past to his younger brother Morgan, played by Bill Paxton. With regards to a shooting in some small western town, Earp says, ‘all those years I worked those cow towns I was only mixed up in one shooting – just one – but a man lost his life, and I took it.’ It was a moment of intense passion and revelation, and it ...