Police Brutality?...

The state officially has the monopoly on violence within its own boundaries which means that state is the only party in that can administer 'violence'. The police is the tool to enforce the rules set up by the state, state in turn gives the police the right to administer 'violence' to insure that the police will be listened to.
Now it is somewhat of an oxymoron to scream "Police brutality" if the police has the permission to administer violence towards anyone who is doing something against the state. Why do people then complain when the police uses this 'right' and administers violence against offenders and suspected offenders. Technically the once that are going against their rights and powers, are the people resisting the police. They do not have the right to administer violence against anyone, which means that when they attempt to administer violence against the party that is allowed to administer violence, the one that 'should suffer' is the party that is offending not the party that is remaining within its rights. Right?