Dealing with challenging behavior is, well, challenging. It can be overwhelming to say the least. It makes you want to stay at home and avoid public adventures as often as possible. But, there comes a time when you must go out with your child. Here it comes: listening to your child scream and yell and flop on the floor; or having your child yell about all the times you've beaten her when you've never even spanked her; or refusing to move when it's time to go.
What makes this worse is when others stare and point. Don't others realize that it's hard enough dealing with this behavior without having to worry about others making things worse? Some behavior in kids can be reinforced by this kind of attention from others. It might even make your child more angry to see people stare.
These outsiders looking in don't know the circumstances surrounding the situation. Your child may have a diagnosis that causes these behaviors or makes dealing with situations difficult for them. You could be working on decreasing the behavior, which sometimes causes it to get worse before it get better.
The point of this rant is to not let what other people do affect how you treat your child's behavior. If you need to ignore the tantrum so it will eventually stop happening, do it! Let them look. If your child is yelling and you need to escort them outside, let them look. People need to mind their own business. It doesn't matter the reason for the behavior, but gawking is never helpful. So when you see a parent dealing with their child's challenging behavior, don't do anything. They don't want your pity or your help. They just want to move on. You should too.