Remember the fine art of smiling? Islam and Muslims invented that too!
And just like many other good things such as Democracy and Freedom that Islam and Muslims invented, that too has become more or less an American monopoly.
To paraphrase and extrapolate — extend — a Hadith: The least that should be expected of a Muslim is to smile when meeting a fellow-human being.
Wow, what an amazing system this Islam is. And, God Help Us, how far we Muslims have wandered off from it!