Please read the introductory paragraphs, as well as the sections titled, "History" and "Societal Impact". According to this article, feminism can be defined as "the acting, speaking, writing, and advocating on behalf of women's issues and right sand identifying injustice to females in the social status quo". As you've seen, ideologies discuss human nature, the role of government, freedom versus equality, and other critical issues. As an ideology, feminism seeks to introduce gender into these conversations.