i always remember bea campbell talking about having a meeting with tony blair when he first got in, apparently her line was 'so what are we going to do about the males in our society?' before breaking down, really, what is kind of obvious, that the prison population is male, that violent crime is male etc etc etc (not exclusively, but mostly). he apparently went quite pale and ushered her out of the door. 
sakura makes a good point, tbh, but it's not one that is easy to listen to. (nor is it fantastically applicable to the looters).
we haven't had conscription in a long while, that normally does for poor males with minimal impulse control. which also rules them out as parents of the future. (actually, in freakanomics again there is a fascinating essay on how roe vs wade helped the crime stats 20 years later). of course that is a hideous truth, but it is a truth. i'm not advocating for war, btw, just noting its effect.
i do think all this stuff is worth talking about. i have mentioned the pupils at Jamie's Dream School a couple of times, they were APPALLINGLY hard to manage, 100% lacking in respect etc but each one of them was pretty adorable in actual fact. but the voices of those daft looter girls did remind me of them, as did the posturing of the rioting boys.