I'm glad that you are a concerned citizen, looking to help. I commend your bravery.
But for me, I won't stick my nose in where it does not concern me or my family.
I definitely would not run up to a unknown scene with my hand on my gun. Now if someone came runningup to me, wanting to cause me or my family harm, that's a different story.
In today's ill-legal court system, they love to throw people in jail for doing good, just look at the U.S. Border Guards that have gone to prison for doing their job by protecting the border against smugglers.
Even if you are not criminally charged, abad guy or his familywill take all you have in a civil suit. One Arizona rancher lost his whole ranch to an illegal alien because the rancher violated the alien's civil rights, by detaining him.
If all the laws and court systems were 100% on the side of good citizens, I would say Yes help all in need, but sadly, it just ain't so.
No sir, call me an isolationist, but I'm minding my own business...with gun on hip.