The Murder Machine by Hugh b Cave/Coming Attractions by Fritz Leiber

The Murder Machine by Hugh B. Cave is a classic 1930 science fiction short story about a device that uses hypnotic thought-waves to turn ordinary people into murderers, first published in Astounding Stories magazine. It's a tale of mind control and murder, where a mad scientist creates a machine that can manipulate the minds of "law-abiding citizens," making them commit violent acts without their conscious will. 

"Coming Attraction" is a science fiction short story by American writer Fritz Leiber, originally published in the second issue (November 1950) of Galaxy Science Fiction.