Why Extreme Candidates are Winning or Will Win Future Elections?

To establish Democracy in a country, and the universal voting right where people will be voting based entirely on their mood or status of frustration, it causes danger like what is happening in the USA with both elections won by Donald Trump; but in the next elections of 2028 if you give the choice of a candidate who is a representative of an extension party of the Ku Klux Klan, maybe they will win, because as I see things, Trump didn’t adjust past problematics only disturbed or disrupted what was working well. Maybe after his term, voters will think that his failure was the guilty of a conspiracy of Blacks and Latinos helped by radical Muslims, so the solution will be to be more extreme and try to stop the growth of these minorities or realty’s on the American soil. Everything is now possible since the intellectual level and quality of voters is very poor, indescribably selfish, and self-destructive.
Imagine now, in a country like Egypt with 50% of the population that suffers of severe poverty, it’s not surprising that the Brotherhood won the Democratic Elections of 2012 after the Arab Spring took away a 30 year Dictatorship. In the Gulf Countries almost 70% of their populations are not native’s and most are from poor Muslim countries, mainly working as servants. If a Democratic order would be implemented I believe you could guess the results.