On the night of November 22, 1987, the television signals of two stations in Chicago, Illinois, were hijacked, briefly sending a pirate broadcast of an unidentified person wearing a Max Headroom mask and costume to thousands of home viewers.
https://en.wikipedia.org/wiki/Max_Headroom_signal_hijacking
On the night of November 22, 1987, the television signals of two stations in Chicago, Illinois, were hijacked, briefly sending a pirate broadcast of an unidentified person wearing a Max Headroom mask and costume to thousands of home viewers.
https://en.wikipedia.org/wiki/Max_Headroom_signal_hijacking