I just want to add a few points to this debate, this is just stuff that I have heard/learnt from working at a racing yard for the past year...
First, the change in whip rules- many jockeys regard that as an unsafe change- WHen you are riding a race horse, with your short stirrups, your whip is a major tool for steering- I haven't ridden in a race, but I ride the horses out on exercise, you use your whip as a method of steering, especially going to a jump.
Also, remember these animals get the best, and swiftest veterinary attention, in the event of an injury.
Are there not bigger, more important issues in the veterinary world too? Perhaps it would be interesting to consider the many MANY equine deaths that are utterly preventable, such as obesity resulting in laminitis? Crippling, and often fatal? Why are we not angry about this? In terms of numbers of cases, and the agonizing suffering of the animals, to me, this is far worse.
I work in racing, and I now have a place at vet school, does this mean I don't love animals? I have to disagree. Everyone is entitled to their opinion, but just thought I would share mine.