Silent, deadly, and never needing to be reloaded, these implements of destruction were designed for just one thing--rapidly cutting through flesh and bone. How many more must die before our government wakes up and bans these deadly weapons?

A Queens man with a history of mental problems was arrested Saturday in the vicious slaying of a psychologist attacked in her office with a meat cleaver, police said.

David Tarloff, 39, was taken into custody in the morning after investigators matched him with three palm prints found at the bloody crime scene, said Police Commissioner Raymond Kelly.

[H/T to Rob for the email.]