"the theory of the political, economic, and social equality of the sexes" --- merriam webster dictionary
Those who oppose feminism by default agree with misogyny and sexism (see other definitions of feminism)
2. an organized movement for the attainment of such rights for women.
A response to sexism, which is also known as an institutional barrier within a society that systematically prohibits women from gaining equal status to men.
While humanism may be the equal rights for both men and women, feminism is also significant because women have been historically and cross-culturally subject to being of lesser status than men. Because patriarchy is such a prevalent form of social organization, and because by its very definition it relegates women as less than equal when compared to men, as long as patriarchy exists, feminism exists by necessity.
1. Men can't be feminists.
FALSE. Both men and women can support equal rights for women.
2. All feminists are men-haters.
FALSE. Feminists do not necessarily hate men; in fact, most don't.
"that women are in fact human beings with the same basic human rights and needs for self fullfillment as men."
A definition that might seem flat and dumb to the less educated masses who might not consider the short historic period this has been an accepted idea. (some are still arguing.)
There are many challenges yet to conquer for the modern feminist, you need only take a look at the other definitions offered at this very site to get a general feeling for the hassle and dicrimination a woman or man feminist might encounter daily.
First Wave- 1800's-1920's. The passage of the 19th Ammendment is commonly seen as the culminating event of this phase.
Second Wave- 1950's-1980's.This is often seen as the high point of the Women's Movement in the US. The failure of the Equal Rights Ammendment's passage is seen as the endpoint of this period.
Third Wave- 1990's-present. Often seen as a more theoretically-driven phase, sometimes incorrectly referred to as post-feminism.