The birthplace of American feminism was Seneca Falls, New York in 1948, at a landmark convention. These women's rights activists gathered for one primary goal. They wanted voting rights for women. Some where around mid 1960's the seed of oppression was scattered among other unhappy women. It started to take root and grew. First it was more general and widespread in western society. As a result, in 1965, the next group of women's rights activists began to surface with their own agenda for female liberation. They wanted to secure equal economic, political, and social rights for women. The liberation movement was composed of an association of women working together in a common cause. These young out spoken women gathered in small groups and focused on changing attitudes, social constructs, the view of society toward women, and, in general, to raise the consciousness of their sisters. These women adopted the motto "Sisterhood is Powerful," to express the plan of the movement. It was also an attempt to bring together women by asserting a shared connection and circumstance. "Sisterhood is powerful" was embraced by the women in order to express one firmly grounded in family-based concepts of interdependence. According to social identity theory, one way to define an "in-group" is to define an "out-group". The cries "Sisterhood is Powerful" was first and foremost designed to solidify the identity of the "in-group." The purpose of the motto was to promote a common identity for the versatile group of women that were committed to women's liberation. Empowerment for women was considered possible only within the framework of this type of common identity. As a result, by organizing collectively these women would acquire capacity to become a force with which to be reckoned with.