The financial crisis influenced not just only the United States. They had a huge impact on the whole world. Some companies - including Apple and Dell - evolved revised corperate logos during the economic crisis.
Dont
Being a great fan of comic books, I always loved the visual identities used for some famous characters. Most super-heroes logos are like a incorporation of many aspects of the characters and their superpowers. I always liked Hulk logo as everytime I look at it I always remember his famous quote "Hulk Smash".