The Mind Control Revolt was a bloody revolution which took place on Earth from 2043 to 2047. The revolts grew out of the fear of the behavior-control implants which had became popular in the mid-21st century. When Starfleet Command began experimenting with senceiver implants in the 2270s, the information was kept classified as to prevent any public unrest. (TOS novelization: Star Trek: The Motion Picture) The TOS novel: Strangers from the Sky references this event as the "Mind Control Riots."