All Lives Matter
To frame it as a choice is to create a false dichotomy, akin to that hoariest of hoaries - "America - Love It Or Leave It"
In our country the police reflect us, the American people. Their behavior is our behavior, their death is our death.
Our ability to empathize, to feel for another is what makes us human - it is in that place where the falling angel meets the rising ape that our essential humanity exists in. To deny someone, anyone that empathy from us is to make them the Other, allowing us the luxury of tolerating anything done to them, or even worse, ignoring anything done to them.
All lives matter.
Feel outrage - not for one life over another, but for the loss of all lives.