Female detective killed by her black partner and father of her two children (who's a former police detective)

http://www.dailymail.co.uk/news/article-2164871/Ex-detective-jailed-life-murder-policewoman-partner-buried-shallow-woodland-grave-just-weeks-gave-birth-child.html

The grandparents are now raising the children:

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Interracial relationships between black and white police officers often seem to end in violence.

For those that missed it, here's the story of the Detroit cop who shot his police officer wife before turning the gun on himself:

http://www.examiner.com/article/detroit-police-investigate-officer-murder-suicide

Deceased married police couple Edward Williams and Patricia Williams

For the young'uns:

http://i.imgur.com/uw4ds.jpg