Ad populum argument, Ataturk and Aristoteles

I am not sure, but I guess that many of you never heard about the Ad Populum argument.
An argument often used in countries practising culture relativism (we did it like this for hundreds of years, so why change it?) or by indoctrination of the masses: everybody thinks like this, so, if you think different, you are wrong.
This argument pops up all the time in the Turkish polemics. Everybody knows exactly what Ataturk have said and would have implemented. They all use the Ad Populum argument, which simply makes any debate impossible. You face a militaristic attack of the Left or Right wing minded people while criticizing a simple thought or thing.
Maybe I must shut up, and stuck to Aristotle: after him 'nothing new' has ever been revealed, said or written...but he is a Greek...ha