The phrase "did a dentist kill twenty men with a machinegun" refers to a controversial and widely reported incident that occurred in Oklahoma in 1923. Dr. John R. Brinkley, a dentist and self-proclaimed medical pioneer, was accused of killing 20 men with a machine gun during a shootout with law enforcement officers who were attempting to arrest him for practicing medicine without a license.
The incident gained national attention and sparked a debate about the ethics of medical experimentation and the use of violence by law enforcement. Brinkley was eventually acquitted of the murder charges, but his medical license was revoked, and he was forced to close his clinic.
