the real problem with liberalism/leftism/socialism is that it is so damned attractive to "educated" types with no real-world experience (also known as "wisdom"). It is so ******* LOGICAL and OBVIOUS, that if only The Rich would give up a little of their excess wealth and give it to The Poor, the world would be such a better place. They fill their pointy little heads with these crap ideas, then in order to "serve mankind" they go into Government.
Then, with no real world experience, they make policy for everyone actually living in the Real World, while they sit in their damned taxpayer-funded sinecures, looking down their figurative noses at the Common People who are too "stupid" to understand their wisdom.
But the fact is that MOST PEOPLE, whether you are talking about the U.S., Western Europe, Israel, know that it's all crap. But the cards are stacked against the majority of people. The "Elites" make the rules, control the Press, own the Universities.
Every once in a while, however, someone like Trump comes along who refuses to life by the rules and forces his way into the game, and THe People love him. Don't be surprised.