Let's get started - the key belief of Feminist theory is that society is fundamentally patriarchal and that this creates inequality in all aspects of life.
There are different strands of Feminism: liberal, Marxist and radical.
Worth listening and watching here if you've not yet had a chance to read the book 'We Should All Be Feminists'
https://youtu.be/hg3umXU_qWcOf course...we also need to start perhaps by understanding what we mean by gender...