To get a good answer to this question, you would need to specify which period in history you are asking about. After all, there have been many periods in US history where common people have seen themselves as fighting against elites. Some examples include:
- The Jacksonian Era. During this time, the US became more democratic and the "common people" fought against such things as the Bank of the United States.
- The Populist Movement of the late 1800s. This movement saw itself as championing farmers against the big businesses like the railroads and banks.
- The Progressive Movement. This pitted middle class interests against big business elites.
- The "Tea Party" movement that exists today. This movement sees itself as a movement of regular people who are trying to take back the government from a group of overly powerful elite types.
So there have been many instances in US history that are seen as cases of the common person fighting the wealthy elites.