So what do you mean? Do you mean to say we should let go of all thieves and dacoits and small time crooks and murderers just because we have not been able to get justice in a few cases?
Justice has to win. Be it with Salman or any other person. He did a wrong and has to pay for it. He should be made to pay for it. One such incident can prevent a whole lot of other 'Salmans' from doing the wrong that he did. His will be a lesson for many.