Is it giving in to the patriarchy to let it slide when the security guard at the entrance to your work building makes sexist comments? Admittedly, they only get as far as "Give us a smile love" (inherently annoying as this may be when you've just struggled for 2 hours to get there) and "all right, darlin'" but they are sexist.
On the one hand, I know I should really be stamping out this kind of behaviour whenever I encounter it. On the other, if I did try and stamp it out, they might prevent (or at least make it difficult) me from entering my building with minimum fuss. Yes, I could protest about this, but let's face it - I don't have the energy.
For the moment at least, I shall swallow my pride, principles and moral standing and content myself with grunting non-commitally as I stomp up the stairs to the office.