There is a seriously flawed system at work. That much you're right about....
1. A flawed system that allowed these known criminals to be on the streets to begin with.
2. A flawed system that even bothered to arrest this man who had done nothing more than protect his property and exterminate vermin on it.
3. A flawed system that allowed the other perpetrator to escape.
4. A flawed system that even allowed this man's daughter to attempt to seek damages for what happened.