How did it ever come down to abandoning peace keeping and accepting law enforcement by any means? Even the New York Times expresses alarm in, When the Police Go Military.
“The Posse Comitatus Act of 1878 generally bars the military from law enforcement activities within the United States. But today, some local and city police forces have rendered the law rather moot. They have tanks – yes, tanks, often from military surplus, for use in hostage situations or drug raids – not to mention the sort of equipment and training one would need to deter a Mumbai-style guerrilla assault.”