Kempton Bunton was a man from the United Kingdom who became famous for stealing a famous painting called the "Portrait of the Duke of Wellington" in the early 1960s.
Now, let's pretend that you really love a toy car that belongs to someone else. You want that car so much that you sneak into their house and take it without asking. That's kind of like what Kempton Bunton did with the painting. He really wanted it, so he took it without permission.
But why did he do it? Well, sometimes people do things for different reasons. Kempton Bunton thought that the painting belonged to everyone in the country and not just to one person who had bought it. So, he decided to steal it and return it to the government, who could then display the painting in a museum for everyone to see.
Just like when you give back the toy car you took without permission to its rightful owner, Kempton Bunton also decided to "give back" the painting. He left a letter explaining that he had taken the painting and why. Eventually, the police found the painting and returned it to its original owner.
Kempton Bunton was caught by the police and went to trial for his crime of stealing the painting. He said that he did it to make a point, but the judge still sentenced him to prison. Some people still debate whether Kempton Bunton was right or wrong for stealing the painting, but one thing is for sure - he became a famous figure in history for his actions.