[citrin_ru]

My impression is the opposite - it is easy to encounter unsupervised children in a poor neighborhoods but practically impossible in upper-middle class ones.

Helicopter parenting is common in families where one of parent stays at home with one or two kids and directs all energy into supervising and 'developing' them. Having high income such families have disproportionate political power and able to enforce this model of rising kids on society at large.