Things They Should Invent: don't check warrants on people who call 911

This guy calls 911 to save his own life, and the police arrest him on an outstanding warrant.

So now people with outstanding warrants aren't going to call 911. You're thinking "But it was to save his life, of course he was going to call!" And I can see either side on whether they should check warrants on people who call for themselves.

But they should definitely never ever check warrants on people who call 911 on behalf of someone else! Imagine if you're injured or you've been attacked or your house is on fire, and the only person around doesn't want to call 911 because they have an outstanding warrant! Imagine if a driver with an outstanding warrant happens to get in a car accident, and instead of calling 911 to help the person in the other car they drive away so they don't get caught!

People who call 911 to help someone else, or who otherwise get involved with the authorities to help someone else, should have immunity from being arrested as the result of their helping.