Some people call it conditioning, others call it education. Societies seem to work better when people don't bash each others heads in all the time, so we try to teach our children that violence is not okay. That seems pretty reasonable to me.
It seems pretty reasonable to me too. Indeed, education is supposed to enlighten you to see others viewpoints. Why do we continue to have problems meeting eye to eye with others' ideas then?
Education is as much to create willing and accepting members of a society, however unjust that happens to be, as to educate. What else is a pledge of allegiance?
If you condition/educate away the social acceptance of demonstrations or even riot then one of the checks and balances of a society is removed. When the reaction comes it's likely to be a more extreme one, or if enough checks and balances are removed, straight to civil war or coup.
