Good thumbnail, imagine trying to makeout that 40% of police familes are abused being a good thing, or downplaying it. What's an interesting note from the article in question though is that every single example cited appears to be a murder-suicide. I'm not sure if it's being selective or not but either way it seems to be a common case... You would think if they knew the ins and outs they could get away with it right?
I would definitely say that a good portion of cops have a tendency towards liking violence or have blood lust, you can see in many police camera videos they only have little hesitation in beating up or shooting a person until they're dead, esp. more so if it's a black person; you get the kind of force used you would expect if it was terrorists wielding ak47s and threatening to blow up a building, but in reality it's just random people... not a good example of justice!

Close to one-fourth of the victims were children, including a child or a stepchild of the officer or children who were unrelated to the arrested officer.

YIKES
what the heck drives a man to go that far?