All over the world racehorses are killed when they are no longer profitable.   In the US, where horse slaughter is illegal, many are sent to Mexico where slaughter standards are lower.  Measures are being taken to try and improve the situation, but if horse racing didn’t exist neither would the problem.  The Racing Industry – which puts horses in harm’s way and creates an excess of animals to be turned into horse meat –  should be banned.

https://www.palmbeachpost.com/sports/20190523/racing-fans-likely-unaware-of-silent-slaughter-of-thoroughbred-horses