Can we all agree, based on the emails, that there were at least some racist cops that worked for the FPD? Seems reasonable, yeah? And maybe we can take the next step and agree that it's bad if there are racist cops?
I would imagine that being a cop you probably get desensitized from a lot of stuff. In addition to racism, I'm guessing they deal with drug abuse, depression and other stuff they regularly encounter.
Free pass then
No, I wouldn't say that. They are public employees. We pay their salaries. Even behind-the-scenes racism is unacceptable. But just because they use crude, inappropriate, and downright racist humor in the office doesn't mean they're ticketing/arresting people based on racial motivation. The idea that black people are being ticketed/arrested in a disproportionate manner due to racism - as opposed to actually breaking the law - is contradicted by a number of studies.
I will say, and I have no basis for this but it's just a hunch, that working law enforcement in a rundown mostly poor and minority community would probably make you somewhat jaded and, yes, racist, over time.