>>11391037Around 1900, a circus elephant killed a person so it was put to death by electrocution. Edison sponsored the mock death sentence and used it as a publicity stunt. It was electrocuted with DC electricity, which was a rival to his AC electricity. He chose DC because he wanted to show that it was dangerous enough to kill an elephant. It was also recorded on film because Edison used it as another opportunity to advertise his video cameras.
I think you can find it on Youtube if you search "Edison elephant electrocution" or something to that effect, it's kind of depressing but not excessively graphic because the film is so low res.