Various flash points in my life, apropos of being brought up a catholic realising mid teens that most religions are deeply patriarchal, with a male hierarchy and a raison d'etre to keep women in their subservient places.
Working in offices and feeling that there were a whole host of men, this was back in the sexist seventies, who were happy to sit on their arses and let women, often busier than they were, faff around them bringing them cups of coffee and washing the cups up afterwards. I was part of a protest group who refused to do that, sometimes undermined by older women in the office who thought that's what female members of staff were there for 
Realising that I didn't want to be one of the appendage type girlfriends who were prepared to troll along behind a boyfriend watching sporting activities that bored me stiff, coming to terms with the fact there are "some" men who have an expectation, of love me, love my interests. Not for me!
Riling against the page 3 culture that was very prevalent in the '70s, although on reflection of what's around now that all seemed quite mild.
Feeling deeply that women of all cultures should be in control of their own lives and destinies, sadly that doesn't happen for many women. Since learning about atrocities such as female genital mutilation for example, in retrospect I feel some of the things that gave me rage back in the dim and distant past pale into insignificance 
Realising how important birth control is for women,