All of them. They all want (and believe) simple solutions to complex problems will solve any problems facing America today. Of course the simple solutions require someone else to sacrifice, not them.
If they were 5 years old we would smile and call them magical thinkers.
Liberals like to point out how smart they are as opposed to everyone else. They also like to say that the current problems are "complex and difficult" but in fact they are quite simple to solve.
Problem: Government taxes and spends too much.
Solution: Government should tax and spend less.
How about
government sacrificing for once?
But the Left opposes smaller government because that's where their power lies.