First of all, I believe that when done correctly horseback riding is a wonderful and peacefull sport. Now to and standardbred racing is cruel depending on the care and how young they start, dressage and jumping can be cruel if people hang and pop horses in the mouth or use spurs incorrectly, and some WP is done incorrectly, and various other disciplines can be cruel. Heck, walking can be cruel if you have a curb and their neck is cranked in. But the cruelty of riding all goes back to dumbess in a humans part, not knowing better, being taught that way, and several others reason. If all people were taught how to care for and treat all animals on Earth then nothing would be able to be cruel.