[charia]

I don't know if I'd subscribe to the above person's ideas, but the simple business approach would probably work right?

Treat it like any form of behavior that creates a hostile work environment and thereby lowers overall workplace productivity. Businesses are incentivized to keep things running in the most productive method possible.

Discrimination costs your business in lowering employee productivity and other affects like possibly losing talent or opportunities. Warning discriminating employees that their behavior could cost them their job or simply firing them depending on the severity of the situation seems like a simple enough solution?