You're at the playground with your kid. She's been waiting patiently for her turn on the slide for 5 minutes, and she's next up. Suddenly, some little Bratty McBratterson shoves her out of the way and butts in line.
You hesitate for a moment, confident that this kid's parent will step in and correct the situation. When that doesn't happen, you look over and see the oblivious mother texting instead of watching her kid.
So what do you do? Do you calmly yet firmly request that the mother get off her stupid phone and parent her child, or do you step in for her and tell her kid what's what since she's obviously too busy or lazy to care?