A body part you've neverseen a female go to jail for showing, and if you did it would likely be on an episode of cops, or for show if it was real life.
There's a reason females in Americadon't show their nipples like a lot of females near the equator do, it has more to do with how people are conditioned socially than a reality where females will start getting locked up for it. Males aren't usually showing any nipples unless its hot outside or they're at the beach. There are many places in public a male is likely to be asked to leave if he has no shirt on at the least, if he doesn't end up in jail. A female would be unlikely to go to jail for breastfeeding in a park, though there would likely be social stigma to go with it, which is what really deters most females from choosing the park as a breastfeeding spot, its thought of as a strange place to breastfeed. Though the same applies to shirtless males in most parks. Where's the double standard females are complaining about?