Not everyone who was arrested is a lawbreaker! An officer can jump to conclusions that someone near the crime scene or acting erratically is a lawbreaker when that person is just an innocent bystander or someone who is trying to help or stop the person acting erratically. There are too many examples of officers arresting people caught in the middle of a protest even though they were not taking part in the protest or arresting someone who was trying to help a mentally disturbed person. Are you saying that such arrests are justified? Do you even know how hard is it to remove an arrest record?