Drafting people by race is discriminatory.
Yuri is the manager of a sports team and is picking players from the rookie pool to fill out his roster.
Yuri wants to have a good team this year.
Yuri picks all the players based on the positions his team needs filled and their performance reports.
Yuri picks only players of African decent because he thinks they are more athletic.
Yuri's team is balanced and performs up to his expectations during the year.
Yuri misses out on picking players that fit all the positions he needs because he only drafted players based on their decent and so his team has exploitable weaknesses.