Chivalry died when the wimmin pushed PC in all of our faces. (male & female)
I read a story a few years ago when a chap held open dorr for a woman, which is good manners for either sex, he was accused of sexism. That may be apocryphal, but I remember reading it.
I was always taught to give up your seat for a lady, to open a door etc I still would but it appears ceratin women wish to be treated as men, so thats that. I do realise this doesn't apply to all women, as much as not all men were chivalrous, bt in a PC world who do you be "mannered" to?