How is bullfighting still legal?

Many people concerned about animal welfare are wondering how bullfighting is still legal in advanced countries like Spain and France. 

As explained in the previous point, there are very vocal supporters of bullfighting who defend its centuries- or even millennia-long tradition.

Organizations such as PETA and Humane Society International want to put an end to bullfighting in all forms, but in Spain at least, the sport has some very powerful advocates. 

This was made extremely clear when the conservative Partido Popular majority party moved that it was against the Spanish constitution for cities to create their own bans on bullfighting.