The 'Seneca Falls Convention was the first major gathering for women's rights. further explanation
Right wing lies about Seneca Falls Convention
Many right wing nut jobs claim that feminism is Marxist in origin. This claim is very easy to debunk. A simple google search will show that the convention spanned over two days in 1848, and the two main groups that attended were Protestant Christians and Quaker Christians.
This convention was basically the birth of modern feminism.