These people made a point of getting revenge in the most creative and sometimes crazy ways that they could. Fair warning, many of these stories have death in them, so we don't recommend that you try them after your next disagreement.
The emperor of the Mongol Empire, Genghis Khan, once sent a trade caravan to the Khwarezmid empire that never returned. The traders were killed when their caravan was seized by the governor of one of the cities. To exact revenge, Genghis Khan invaded the empire with 200,000 men and killed the governor by pouring molten silver down his eyes and mouth. Genghis Khan even went so far as to divert a river through the Khwarezmid emperor's birthplace, completely erasing it from the map. You do not want to get on this guy's bad side.
Buford Pusser was the sheriff of a small town in Tennessee in the 1960's. His friend and later his wife were killed by the State Line Mafia. He then went full vigilante mode and killed almost all of the perpetrators, going as far as to hire a hitman to kill the mafia boss Carl "Towhead" White. One of the only men to survive did so by willingly going to prison when Pusser came to town. Afterward, Pusser returned to his original job with no investigation turning up any results on the murders. His story was made into the movie "Walking Tall."
One woman from Prague was deeply upset at her husband's infidelity. She decided that she would take her life by jumping from her third story balcony. In a weird twist of chance, she landed on the husband, cushioning her fall. She survived the encounter, but he did not.
Charlie Wilson got involved in politics at a very young age just to exact revenge on his neighbor. Charlie's dog was killed by the man, Hazard, when he mixed crushed glass into the dog's food. Later Hazard was running for city council. Charlie Wilson got his revenge by driving 96 poor black voters to the polls which ultimately caused his neighbor to lose the election. Wilson referred to this as "the day he fell in love with America."
A Frenchwoman, Jeanne de Clisson, became a pirate known as the Lioness of Brittany to seek revenge after her husband was beheaded. She sold all of her lands to buy 3 black ships brandishing red sails and to fund a pirate army. They hunted and destroyed all the French ships that they could for 13 years starting in 1343. When she caught nobles, she personally beheaded them with an axe.
Lorena Bobbitt committed the infamous crime of cutting off her husband's penis, driving off with it, and throwing it into a field. She was later ruled insane, as it was considered that her extreme action was her snapping in response to unsatisfying sex and claims of abuse. Doctors were able to reattach the appendage with a 9-hour surgery after they found it in the field. The man went on to star in an adult film of his namesake, "John Wayne Bobbitt: Uncut."
Anthony Stockelman molested and murdered a 10 year old girl in 2005. When he was sent to prison, a relative of Katie's was reportedly also there. To permanently get revenge, they got to Stockelman in the middle of the night and tattooed "Katie's Revenge" on his forehead.
Spring Hill College in Alabama was known for being very progressive at desegregation and integration efforts by the year 1957. One day that year, the KKK planned to set up a burning cross in protest. However, they made the mistake of doing it during finals week, so the students were all in their dorms and heard the KKK outside. The students then attacked the KKK with bats and golf clubs and forced them to retreat.
Alec Turner was a real life version of Django in Quentin Tarantino's famed movie. Born a slave on a tobacco plantation, he made friends with the plantation owner's daughter who taught him to read at a young age. When the owners found out, he was brutally whipped. Many years down the line, Alec had escaped and joined the Union Army to fight slavery. He rounded a posse and revisited his old plantation, personally shooting and killing the fellow slave who acted as taskmaster, just like Samuel Jackson's character in the movie "Django Unchained."
Princess Olga of Kiev was very dedicated in her revenge of her husband's death. Her husband was killed in the neighboring Drevlian city. When many Drevlian suitors later came to court her, she had them all buried alive. She then tricked more Drevlians into coming to her town which resulted in their death. Finally, she started an all-out attack on their city. When that failed, she demanded pigeons for peace, which the Drevlians obliged. She then attached coals to the pigeon's feet and released them to fly home, resulting in much of the city burning down.
Lee Beaumont, a British man, was so fed up with spam cold-calls that he set up his own premium rate number that earned him £7 pounds per minute. He asked businesses to call him at that number instead, netting him around £7 a month at first, but skyrocketed in revenue when he gained notoriety for his tactics and started getting random calls on the number.
Alan Ralsky was a convicted fraudster and spammer. When the website Slashdot got a hold of his address, they signed him up for every single mailing list and spam website they could find, resulting in hundreds of pounds of mail being delivered to him daily. Ralsky was extremely upset with the situation, getting a good taste of his own medicine.