[owners of killed horses] hoped justice would at last be done
The justice that comes to my mind is that imposed by the Overlords, in one of my all-time favorite books, Arthur C. Clarke's Childhood's End.
I'm not European, and my own country commits its fair share of stupidities, but the fact that the EU subsidizes bullfighting is just bizarre.
Just as boxing, ultimate fighting championships, prostitution, drug use, and most other human activities objectionable to some should not be banned, bullfighting should not be banned.
Were I European, though, I'd be very angry about hefty subsidies to the bullfighting industry, especially in the guise of agricultural subsidies.
Here's an interesting video from the archives of the European Parliament's EP Live.