There are many powerful insights in this article from Thomas Sowell, including this key observation:
The agenda of the Left is fine for the world that they envision as existing today and the world they want to create tomorrow.
That is a world not hemmed in on all sides by inherent constraints and the painful trade-offs that these constraints imply. Theirs is a world where there are attractive, win-win “solutions” in place of those ugly trade-offs in the world that the rest of us live in.
Read it all. And get his book Conflict of Visions to get to the roots of his assertions in this article. It will give you eyes to see and ears to hear the key assumptions that drive the present ideological conflict between the left and right in America. It is well-researched, balanced, and historically sound. It would be well worth your time, if you care about politics and the direction of our nation.