When you google “women’s lib” (no quotes) the first entry is the Wikipedia article titled “Feminist movement”, with the article opening as “The feminist movement (also known as the Women’s Movement, Women’s Liberation, or Women’s Lib)…” So I think it is safe to assume this is the standard definition of feminism.
In any event, even the individual actions they pursued such as encouraging family planning and suffrage, were things that many of our gedolim took strong issue with. But the real goal of this corrupt movement, whether admitted or denied, was and is the destruction of the traditional family unit and function. Gender bending and anything to go against traditional society norms.