Attitude of children from India vs USA

I recently went to a birthday party of a 3 year old daughter of my friend.
There were many south indian families - tamil, telugu and kannada speaking families which are like 35 years old. They have either one kid or two kids at the most.

There was a 30 second incident, which had affected me quite a bit and had been thinking about it for a while.

There was a family, which had their son 8 years old kid grown in Thiruvallur, Chennai - visiting US for an official trip and there was a Sikh family with their boy, about 5 years old - born and brought up here.

Everyone got stunned that the chennai boy started hitting the sikh boy, because of a baloon issue! The Singh father was stunned to see that somebody is hitting his son. Even, he would not have hit his son, nor his teacher! In fact, Chennai father conveyed his apologies to the Singh father.

Is it the way kids are brought up in US vs India? I am litte worried about that chennai boy, who was trying to hit the small boy - just for a small issue.

I believe this is something the Chennai father has to think about a bit - about the way his kid is being brought up!!