Upload & Sell: Off
Sensitive why? It is just part of life or human psyche.
In any given crisis, where no immediate threat to oneself is posed, 9 in 10 (or more) people will simply stand by and watch. 1 in 10 may assist _if_ no threat is posed by assisting. When a threat is posed by assisting, this ratio drops farther. This phenomenon has been studied by psychologists, mostly since the mid to late 1900's in wanting to comprehend why no one helped despite an unfolding crisis. It happens all the time, every day. It's just part of being human and living among humans. Never expect others to rescue you, look out for yourself, your family, your friends, but do you lend a helping hand to a stranger? You hope that you would be that 1 person if a crisis unfolded in front of you, you like to think you would be the hero, but you really don't know until it happens.
I think this is somewhat cultural, when I told the story about the photographer and the subway train to a friend from the east, his first thought was to admire the photographer for doing his job honorably and to the best of his ability to the very end, even though it cost him his life. Zhuangzi explored death in his writings and questioned whether death was really a bad thing, finding no clear answer.