If you happen to be in the vicinity of an arrest situation there is no prohibition against watching it. However, don't get too close or attempt to interfere in any way, physically or verbally. You can cause a safety hazard to the officer, suspect, yourself, and those around you.
There are other ways you can watch as well. Shows such as COPS or even the news broadcasts arrest all the time. You can go on YouTube and find several videos. If you want to view in person, you can even go down to your local police department and request a ride-along. Many departments will arrange for you to ride with an officer for their shift. You will not be able to participate in the situations, but you can observe. If it is an unsafe scenario, the officer will likely tell you to stay in the car.
They hire a interprenter.
Police officers are on salary; they don't get paid on commissions. What that means is, they get paid the same whether they arrest someone or not.
No, they only have to inform you of your rights if they are arresting you.
When they make a wrong decision like arresting sting someone for no reason
They don't. Police have to include a charge in reports and warrants when arresting someone.
Inf corp inj:spouse/cohab
they help by arresting criminals and stop robberies
To serve the british public, by arresting idiots!
Its a nick name for a Police Officer who is good at his job of arresting thieves.
Its C. The police get warrant before arresting a suspect
The arresting codes (often called Penal Codes) are specific to each state. Look in findlaw.com by state and penal code and it will show you.
Search warrants or arrest warrants are issued by judges on the request of the police. If you (or your family) have been the victim of a crime, you should report it to the police. It will be their job to investigate and take appropriate measures, which may include arresting someone.