There's actually a fairly famous case in the Boston area of an American museum being robbed: https://en.wikipedia.org/wiki/Isabella_Stewart_Gardner_Museum_theft

There's actually a fairly famous case in the Boston area of an American museum being robbed: https://en.wikipedia.org/wiki/Isabella_Stewart_Gardner_Museum_theft https://en.wikipedia.org/wiki/Isabella_Stewart_Gardner_Museu... In general it's pretty rare for museums to get robbed because while art pieces are valuable, once stolen and reported as such, they have to be returned to the rightful owners when found. As such, they can't be resold through public channels such as art actions, and even private sales are risky