Whether it is a barking dog or a screaching kid, as long as it stops at a reasonable hour, I don't see the issue.
Also, in response to another poster, I seriously doubt that the police would be interested in a call complaining about loud children at that time of day.
Really, if you had a neighbor with a dog that barked all day long it wouldn't bother you? Obviously you have never had a constant noise issue near you or you would not be saying this. This noise is BEYOND normal kids playing noise if someone has to turn up their TV to be able to hear the TV.