[Stuart]

I agree that both parties in any crime should be granted anonymity until their case is at least heard. As Tiz says, arrested is not the same as charged, or convicted. Even if they charge someone, it's no guarantee that person will be convicted.

I think that the Police can arrest a person if they can show there is reasonable suspicion that that person has committed a crime. I also think that the Police arrest someone to ensure that person is available for questioning and/or charging.