S K Ditta: It's a link to a nice video. Trump, Marine LePen, Nigel Farage and similar opportunistic leaders expose weaknesses in an inherently flawed system.
Thnx for the link. Of course, Socrates was not the only ancient Greek philosopher to express doubts about 'democracy'.
Aristotle in his "The Politics"analyses the main constitutions of his time and points out their problems. Plato also saw flaws in 'democracy.'
Its relatively easy (as your posted video points out) to see why democracy is flawed. To a greater or lesser extent, voters today (in western style democracies) are manipulated by the party that forms government. Most voters cannot critically analyse government policies, indeed if half (?) of voters are below average intelligence, we could wonder it they could even contemplate what it means to critique a policy. And when the democratic representative is also drawn from among those who are below 'average intelligence' we can see the possibilities for disaster.
Plato also discarded 'democracy." Plato opted for a form of aristocracy, with a "philosopher king" who would be grounded in wisdom and reason. That leader would rule through a trained governing organisation he called 'guardians.'
While there exists a possibility that the American constitution sought to have (at the top of the governmental tree) an "elected king," the developed government based on party politics has spoiled this ideal. Why? Because political parties are usually oligarchies and not democracies, with (of course) the faults and weaknesses of both.
One of the most fascinating political experiments in the contemporary world is occurring in China, where in the less than 70 years in which the PRC has existed, the ruling Party has undergone many transformations and in its current iteration, has a leader that has had to prove his potential by governing (at least) two large (with populations over 100,000,000) provinces on his way to the point where the CPC will consider that person for National leadership. The selected proven leader is assisted in government by highly trained cadres - an arrangement that bears a strong resemblance to Plato's state "guardians." Up to this point, an honest observer has to admit to the practical success of this Chinese experiment, No other contemporary government has brought a third world nation into near-first world status.