Grumm – I think you are viewing the word liberal too narrowly.
Having just come back from Crete I would suggest that children there are allowed more freedom but, if high spirits starts to cross the line of what an adult thinks is acceptable, a sharp word from an adult of any age seemed to calm them down without the tirade of abuse it would engender here.
European countries still have the family as the centre of their society, grandparents are cared for and respected rather than reviled and mocked. The have better social cohesion so values remain consistent. We have managed to destroy the family as the centre of society (Thatcher’s fault again!) through large scale unemployment, mobility of workforce separating extended families etc etc.
Our version of liberalism towards children is “let them do as they will until it is so serious we haev to lock them up and criminalise them”, perhaps if the guidelines were applied more firmly and earlier the problem would not arise.