Sadly I can see both sides to an argument like this. On one hand, given the complexity and danger of their job, police should be afforded more leeway whenever an unfortunate incident occurs. On the other hand, given their ability to arrest or shoot people in the course of their normal duties, police should be held to the absolute highest standard with zero tolerance for error. For myself, I lean toward the latter. Just like doctors are expected to exercise the utmost care when treating a patient, even for the most minor or routine of procedures, cops should always go by the book and never let their emotions cloud their judgment.