Out of 60 or more employees, they were able to find less than 10 racist emails sent by only 3 employees over more than 5 years. That's hardly a pattern or rampant racism or discrimination, even amongst the 3 that they DID catch. On top of that, somebody telling an inappropriate joke or sending an inappropriate email does not necessarily mean that they are not doing their job properly. A police officer could hear a racist joke, retell it, and still go out and treat people fairly while on his beat. I'm not sure what you don't think makes sense.