What is the issue with breastfeeding?

I use to work at a mall and people would have huge fits over this. If I saw a woman breast feeding her child I didn't say anything at all. But other would flip their lids. I always liked to point out to them that just few stores down there was Victoria Secrets where they had huge signs in their windows with woman wearing barely there underwear but they where not freaking out about it so why are they freaking out about a woman feeding her child and a woman who had a towel covering her and her baby, unlike the ones in the signs. And I would ask them why is it wrong for her to feed her baby what it needs but it was acceptable to have a woman sexualized on display for children to freely see(the normal excuse they gave for being offended about breastfeeding was "cause of the children" which is why I would ask them the next question). Of course nobody ever gave me a answer, they just stormed off. less