Simplify the following text for a Grade 7 native English-speaking person.
Original: Feminism is mainly focused on women 's issues , but because feminism seeks gender equality , some feminists argue that men 's liberation is therefore a necessary part of feminism , and that men are also harmed by sexism and gender roles .
Simplified: Feminism is a social and political movement . Feminism is about changing the way that people see men and women .