First, let me just say - women showing breasts in public legally, that gets my vote. However, since I love to take the other side of such things, I'm curious. First, woman have been breast feeding for centuries, why is there this big push as of late to protect women who feel the need to do this in public vs. whatever it was they used to do when they couldn't? (My guess is they stayed home and fed the baby. Child rearing is not without its sacrifices I guess.) Second, all body parts have a natural purpose, that doesn't necessarily mean you get to pull them out and show them off to the world if such an act goes against community standards, wouldn't you agree?
Can't agree on that one, sorry, because I think in this case the existing community standards are perverse, unnatural, and hypocritical in a nation that makes so much noise about family values.
Staying home is great if you choose to and if you can, but every mother and family's situation is different. Community infrastructure in most parts of USA is not conducive to moms and kids getting their needs met by mom staying home. Some moms work outside home for pay, and for all kinds of other reasons (driving older kids here and there for instance), so they often have to be out in various public settings with their babies at all kinds of times that might not be ideal fo some or all concerned.
I suspect public breastfeeding went on for many centuries and wasn't any big deal, till after Nestle & friends pushed formula addiction on the world and gave breastfeeding a rep of being somehow unclean, nasty, etc. I don't think there's a sudden push about public breastfeeding, just a natural tendency of at least some moms to do what comes natural, and respond with righteous horror and indignation when it is treated as criminal or pornographic.
But if there is (a sudden push), then perhaps it has as much to do with Nestle's very successful anti-mothers'-milk campaign as with the fact that women in general today live more public lives than in the past, because of our/their increased presence in the paid labor force and all other realms that not so long ago were exclusively male domains. Maybe this is all another aspect of adjusting to the changing times vis a vis women's rights.