Nobody “watched” Kitty Genovese get repeatedly stabbed. The original report overstated the case wildly. There were witnesses, but no one realised what was really going on. http://en.wikipedia.org/wiki/Murder_of_Kitty_Genovese#Attack
The bystander effect clearly doesn’t just effect you, though. It’s a known, unfortunate feature of humans the world over. Why should you carry particular guilt for acting in accordance with human nature – especially if you clearly didn’t mean to?
Though I run this site, it is not mine. It's ours. It's not about me. It's about us. Your stories and your wisdom are just as meaningful as mine. 