Stop Racing Greyhounds

Picture yourself in a small and cramped crate. Hundreds of dogs around you smashed together in a small room. Your life hanging in the balance off the next race. This petition is to stop greyhound racing. They are brutally murdered and hurt if they don't do well in races. They are kept in barely living in conditions because to their "owners" all these dogs, they are running price tags. Please help this animal! 
Petition would mean the world to me as I own a retired racer. She is missing claws has tattoos in her ear with A number. Greyhounds are not numbers they are dogs.