If you had the chance to intervene and save some one

If you had the chance to intervene and save some one, be it some one you know or not from a fatal accident and save there life,
Would you?
But if you could would you save some one that you didn’t like or heated?
Lets here your thoughts on this topic?

or may be like the song below
Nickelback - Savin Me
http://youtu.be/jPc-o-4Nsbk