WTF? People need to learn to control their brat kids. Why should the public at large have to listen to their whining and mewling and general misbehaviour?
Oh, let me guess, you were never a little kid and YOU never cried. Or no wait, you did cry but mama beat the crap outta you when you did and that’s why you have an intolerant attitude to this day?
You never cried, for any reason, when you were a kid?
My kids have cry in public, sometimes it's a fit, sometimes they're hurt. For fits, they are warned, then removed.
For hurt, sometimes crying doesn't stop.
Since the story says she was in an elevator, maybe the mom was trying to remove said kid from everyone else's earshot.