Actually, calling the police helped with understanding what happened. As to actually helping him during the emergency, no, not so much. You only call the police after the emergency or the police call the undertaker afterward.
Most of the time the Police are an “after the action” result of criminal activity. As to protection - it is up to you!
“The real reason for the 2nd Amendment.”
Not quite right but personal protection, or self defense, is related to the real reason for the Second Amendment. Hint?: We also need protection from our government. Its been said a million times but maybe you have never heard that the 2nd Amendment guarantees all of the other amendments.