Unfortunately people do not change. Look at our history, i fear that it's only a matter of time when we will see another hitler in disguise, but this time this will not be the jews that will be the target but muslims. You can feel populism all over the Europe, (i am from EU) every month right wing parties getting stronger and stronger, nationalism and populism EVERYWHERE. Only 30 thousand votes saved Austria from radical right wing president. Look at US also, political correctness in really excessive levels and not speaking about things made Trump so popular.
There is a problem with education also, we should teach our kids what populism and nationalism is, what are the consequences of radical nationalism.
"Those who don't know history are doomed to repeat it."