It's not really Spanish but English. The point is that I am not sure that there is a version in Spanish, since the origin is in a society with a significant discriminatory bias where its claim is fully justified, such as that of the USA. It would be to require, in contracts negotiating the incorporation of groups of persons, the inclusion in proportional parts with different ethnicities, sexual preferences, religions or minority social sectors within the work team. In this case the rider is associated with the rolling of the rider and his implements to stay in the mount, which gave rise to the concept of "counterweight for balance between people".