[papertyger]

What goes along with the material is the training. That, coupled with the fact that many cops are former military.

Incorrect.

Training on military systems does not change their different ROEs, nor their expectation, indeed, commitment to go home safe at the end of the day.

Consider the havoc Christopher Dorner caused, and he was alone.

[Glennb51]

An isolated incident does not constitute a trend.