You've got it all wrong; you are not being laid off and replaced in in effort to provide more ethnic diversity. You are being laid off because the role that you currently serve in will no longer exist....FULL STOP.
Now comes the next part. As you know, brand new roles are being created, for which you, and all other internals, are free to apply for. The company would like to address obvious diversity issues within the company, while at the same time expanding the base of available candidates. The overall goal is to recruit the absolute best candidates in the INDUSTRY for these roles, and not be limited to only the best who are currently at the company. If we are all as good as we think we are, we will have no issue. After all YOU ARE "THE BEST" RIGHT?
So again, at the time of the layoff, none of our positions will exist, and we will simply have to compete against the best in the industry if we want to get one of the newly created positions. The are many minorities in the industry who are far superior to what we currently have now. The company needs to expand the pool of candidates, in order to capture as many as the best as possible. Then its game on, "may the best person win."
If you are a great rep, you should have no problem!