I'm white. Many years ago, I intervened in downtown NYC on two occasions when friends and a stranger were being attacked by hoodlums bent on assaulting what they misperceived as gay men. I also got stabbed in the eye socket by a white lunatic there, and four black guys in a convertible came by, saw me spurting arterial blood and drove me to Bellevue public hospital a mile away. They drove on the wrong side of the street at times to get around traffic. I bled hugely in their car. They came to the neighborhood that evening to see if I was okay. I also stopped to keep a white man from beating a young black woman on the street. I stopped to rescue a young woman in Viet Nam who was being publicly beaten by three young men. 

However, when my pickup got stuck in a remote California desert canyon, I managed to walk, thirsting, a long way to a little traveled paved road. Four cars passed by me in the space of an hour though I was pleading for help. A minister friend happened along to save me.