I find it very annoying when people keep staring (looking) at your baby when he/ she keeps screaming in the shop/ MTR/ indoor.
What can parents do / react about it? I always feel disgusted when I see the people pulling a face at us even though we try very hard to calm the baby down.
in my opinion, u have to ignore the staring... take a deep breath, calmly firmly talk to your bb at his/her level. teaching your bb is more important than those irrelevant ppl... as long as u dun shout in public, other ppl would still respect you as a well educated person
if bb simply ignore u, let him / her have what he wants first, but 'teach' him/her as soon as u step inside your home.