It is a complex topic, what can you say? What can offend someone is not always understandable, and in that sense if someone really wants to be offended, he will find a reason. Recently I was in the Moscow Metro and in a big hurry. In my haste, I accidentally bumped into a man. I immediately apologized, but at the same time I was excusing myself there followed a blow to my back. "What's that for?" I asked, dumbfounded. "Why did you push me?" he replied. "But I apologized." "And why should I care that you apologized?" "But I didn't...