How does James Madison identify the problem in the first paragraph of federalist?

In the first paragraph of Federalist No. 10, James Madison identifies the problem of faction, which he defines as groups of individuals who gather to promote their interests at the expense of the common good. He highlights how these factions can lead to instability and injustice in a government, as they often prioritize their own desires over the rights and interests of others. Madison argues that the existence of factions is a natural consequence of human nature, making it essential for a well-structured government to manage their effects.