How is diversity defined in the legal context

1) How is diversity defined in the legal context? 
2) Utilizing the Internet, find one major law that deals with workplace diversity. Provide a short explanation of the law. Do you believe this law helps in reducing discrimination? Could it be improved? 
3) Find one major legal case related to discrimination and provide the link. Explain the case and the outcome. Do you think anything has changed since the closing of the case? 
4) What do you think could be some of the ramifications of organizations that either engage in discriminatory practices or “turn a blind eye’ and allow it to occur?