Is this real justice?

Recently, Sir Alex Ferguson was attacked and aulted, His attacker was sentenced to 18 months in prison. Some young yobs, who stoned a man to death received sentences in a young offenders institution, of around two years apiece. A man that attacked a man of 97, blinding him in one eye was given a three year supervision order but not imprisoned, on the condition that he seeks psyciatric help. Is it just me, or does anyone else think that our justice system has gone to the dogs? In the latter case, the court was of the opinion that the attacker needed psychiatric help. Why was he not put into prison to receive this help? How can the court be sure that he won't snap again? He attacked the old man for virtually reason. As with the youngsters who stoned the man to death, surely they were old enough to know right from wrong, so why such lenient sentences? Is it not time that our judiciary were given a guide to work by?