Are you conflating the phrase "whites always get favoured" with the notion of "white privilege"?
In the context of this show: * "some" are always white and/or female "others" are some white males, and all non-white males.
This "benefit of the doubt" is a privilege.
I've never watched the show, but when one group of people is disproportionately represented in crime statistics, in some cases by a factor of 30x, then it's just common sense rather than benefit-of-the-doubt.