Nowadays it seems that anything goes. We know people who live on the third floor of a four-floor co-op apartment complex; the apartment directly over them is inhabited by a family with two children, one of school age and the other a toddler. During the past several years, they have lived with having to listen to crying (ok for the most part--children cry), occasional yelling, frequent stomping and running heavily around the apartment (the older child), throwing of objects on the floor (the toddler), bouncing balls, and the entire family waking up between 5 and 5:30 am for whatever reason. Neither parent seems to work outside the home (they work at home), so why they need to be up so early is anyone's guess. They are a noisy family and there are no rugs in their apartment to dampen the noise. So the people we know end up waking up around that time as well. Involuntarily. The parents seem to be averse to disciplining the older child, so she does and says basically what she wants.
This would never have flown when I was a child. Our downstairs neighbors never had a complaint about us. And there would have been complaints had we been noisy. So it tells me that my parents had the right idea in not allowing us to behave like rambunctious children. Children need to be taught when they are young that they cannot behave just as they please. But in society at present, and especially in this country, it seems that anything goes where children are involved. Children rule. You cannot yell at a child without risking criticism. I know that to be true from a younger friend of mine who has tried (in this country) to correct/yell at her child when he did something wrong. Unless you are physically or psychologically abusive, normal correction/criticism/yelling is necessary at times when raising children. You cannot let children do exactly what they want, when they want. They do not know what's best for them.
Back to the family who live above the people we know. The parents should enforce some ground rules for living above neighbors. They should instruct the older child to stop stomping and running about. They should put rugs on the floors. They should abide by the co-op complex rules about no noise between 11 pm and 7 am. But they don't. I guess it's hard to expect children to have respect for neighbors when the parents don't.