(A little French lingo there to show I bear no prejudice against frogs.)
Of course being a Libertarian you would feel that way.
In today's society, practically half of America's parents (the ones who vote for DemocRATs and Libertarians) haven't got the sense God gave a cucumber. They're so busy procreating, slurping suds, sucking on a cigaret or mj, watching weeks of mindless crap on their tv that they haven't a clue as to where their little potential robbers and killers are hanging out.
Polite society needs protection against these little weasels until they're old enough to commit major crimes and get free room and board in the slammer.
I'll bet you were a dandy teen and look: you've grown up to hate law enforcement.
Just because liberals are bad parents is no excuse for the government to tell me how to parent my children. How about innocent until proven guilty? If the bad seeds commit a crime, arrest and prosecute to the fullest extent of the law, but don't assume that everyone out past a certain time is up to no good..plenty of crimes get committed during broad daylight... I've known plenty of daytime crime victims...