Barbaro won last year's Kentucy Derby by 6 1/2 lengths, the biggest victory margin at Churchill Downs in 60 years. In the second race toward the historic Triple Crown, The Preakness Stakes, the sleek colt stumbled out of the gate and badly broke his leg. The usual race track routine is for a half dozen people to rush onto the track, hold blankets up around the animal to shield the public from witnessing the upsetting act of a vet running out to put the horse down. But Barbaro's owners jumped into rescue mode and spent these past eight months in an attempt to save their beloved horse's life. This Monday, they were forced to give up the fight. Barbaro, in the end, was euthanized...