The cause for concern is the increase in military-style "No Knock" raids in the place of normal police work. When the boys have the toys then they tend to want to play with them, and that leads to all kinds of trouble. I agree that police should have access to the needed weapons and tools to disperse violent riots, I think we're seeing that they've crossed the line into everyday use where they have no place.

 

Here's a great white paper on the topic from almost 10 years ago, and it's only gotten worse since.

 

http://www.cato.org/publications/white-p...ds-america

 

Here's the most recent take from The Economist on the topic:

 

http://www.economist.com/news/leaders/21...actics-too

 

The police and the community must have a trust relationship, the more they use their heavy handed toys and tactics in routine duties (or lunch breaks even) they more they damage that trust.

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