Then there's a problem with the system. Does it means you as neighbor have to ignore police and make “justice” by your our hands?
We all belong to a common system, if there’s something wrong with it let’s analyze and change it together respecting the vote of majority. It seems to be democracy.

>And if the police only give him a warning for 12 years?
>
>>>That is like saying that you see that your neighbor is beating his wife, but it's not your right to intervene.
>>>
>>
>>Call the police. Do not break into their home with a shotgun.