That's very broad. How about Raft of the Medusa by Gericault?
It's a huge oil painting with a good story behind it. Basically it was the first large scale painting of a current event, especially one criticizing the French government. When a ship was going down, the lower class soldiers were cast overboard onto a raft and left to die out at sea while the generals were able to get away safely. But the cast-off soldiers were eventually rescued and came out with their horrific story (involving cannibalism) and how they were left to die by their own generals.
The composition is also pretty cool, the far right being mellow, and working its way into a huge crescendo of hope and excitement when they saw the first sign of a ship in the distance.
Look into it, it's pretty cool.
