Whenever differences - actual or imagined - between different groups are discussed, two major things happen. First, some members of group found at a disadvanta

Whenever differences - actual or imagined - between different groups are discussed, two major things happen. First, some members of group found at a disadvantage are upset. This is regardless of how many other members of that group express that they themselves are not. You can dispute facts, but you can't deny people's feelings. Second, the disadvantage is then used by some people to justify something that fits their agenda, prejudices of beliefs, whether it makes sense or not. So I can hardly blame anyone responsible for managing a huge number of people of avoiding sensitive topics. Besides, a corporation is not exactly the place to discuss these things: they need to be dealt with as a society in general. If you try to introduce these topics into your workplace, you might even achieve the opposite of what you want, because people will do whatever you expect them just to keep their jobs, but won't change their opinion because their manager told them to, or because they attended a workshop where it was explained to them that their culture is inferior, for example.