I did it. I didn't whip it out and show everyone the facilities, but I didn't hide under a blanket, either. I learned to arrange my clothes and the baby so that I hardly ever flashed anyone. My oldest is in his mid-20's so it was a little less common then than it is now.
OK, it was a lot less common and people occasionally made suggestions that the bathroom was the most appropriate place for that sort of activity, because -- it's a body function.
I didn't get nasty with anyone. I just did the same thing I did with other unwanted parenting advice. I ignored them. After all, I didn't see THEM taking their plate into the bathroom to perform that bodily function in private.
We have a serious problem in this country, folks. There are still people who can say with a straight face, "It's a body function and should be private." They think their sensibilities are more important than the health and safety of someone's child.
I simply do NOT understand their problem. I know it's a cultural issue. They were raised to believe that breasts are for sex and that suckling = sex. For babies it equals food. The best possible food for babies - who can't wait until nobody with breast issues is looking.
"Nurse-ins" can be used to demonstrate that it is possible to breastfeed in public without unnecessary exposure - or they can be used as an in-your-face political statement that doesn't do much to further the cause of breastfeeding.
The breastfeeding statistics in this country are abysmal. The good news is that we're getting more than 70% of moms to at least try breastfeeding. The bad news is that most of them don't keep it up. Partly that's lack of support at the outset. Much of it, though, is lack of support - and sometimes outright hostility - when they get home.