I appreciate you are concerned above all for equal treatment for all, but in my view you are letting easily manipulated stats give you a false sense of unfairness in the workplace that simply doesn't exist, and hasn't for a very long time.
Numbers are funny things. They could be made to dance a jig, and one set of data can be used to argue a point from both sides. Stats are worse - they don't ever tell the complete story, and are almost never represented honestly when used in discussions like these.
“The greatness of a nation and its moral progress can be judged by the way its animals are treated.” - Mahatma Gandhi