Real feminists only want equality, that person was just being a bitch..
personally if anyone opened a door for me I would just say thank you, that's an appropriate response.
When I opened the door for a feminist woman (I know because of her "this is what a feminist looks like" shirt), she said thanks and opened the door for me on my way out.
WHEN YOU OPEN A DOOR FOR A FEMINIST WOMAN SHE SAYS "DISGUSTING MAN, I CAN OPEN THE DOOR MYSELF". BUT IF YOU DONT OPEN THE DOOR SHE SAYS "IGNORANT MEN JUST THINKING ABOUT THEMSELVES"; SO WHAT DO YOU WANT US TO DO?