Algunas personas apoyan la tradiciã³n del toreo y otras se oponen porque

The word that fills the blank is:

- Algunas personas apoyan la tradición del toreo y otras se oponen porque es maltrato animal.

Explanation:

The translation of the sentence is:

- Some people support the tradition of bullfighting and others oppose it because it is animal abuse.

Bullfights, although dating from the 11th or 12th century and are part of the Spanish cultural wealth, require "dealing" with a bull until he gets tired and is sacrificed with the sole purpose of delighting those who watch the show, Therefore, people who are against animal abuse (some of which are even vegan to avoid consuming any animal products), are completely against this type of practice, since they consider it cruel.