You left out wealthy, in those shows rich white people and CEOs kill at astounding rates.
There are more homicides in Manhattan on the various L&O shows than there actually are in Manhattan—there were about 60 real murders there last year.
AFAIK, a Fortune 500 CEO has never been convicted of murder, but they're the leading killers in most TV shows.
Admittedly, CEOs have the potential to claim over-eager subordinated did the killing, but I think they just don't operate that way. If they did, the media would go into continuous orgasm and so we would have heard about it.