I'd bring back proper discipline for starters. (when it's justified and within reason).
Kids know they can get away with things so they will push, have said it in posts about bouncers nowadays not being allowed to give knobheads a slap. Nothing worse than seeing a scrawny kid getting in a bouncer's face giving it loads because they know the minute the bouncer touches them it's their job / license gone. They would be straight to the newspaper and trying for compo as well.
When I was a bit younger you would have been dragged out the back and given a few digs and thrown onto the street.
Thats not me saying people can just go around willy nilly dishing out the digs, only if it's deserved.