You're kinder than I am. I went to visit my Uncle in New Mexico, an Air Force vet who served during Vietnam (and, sadly, an ultraleftist). I had to listen to him drop f-bombs all over the place regarding Reagan, Dubya, Rumsfeld and the like. After he was done with his schtick and pontificating on how we've messed up the Middle East, I asked him point blank... "So, what's your solution ?" His answer, "I dunno." I think the "stupid" fits.
It's intellectual laziness. It's easier to criticize than it is to make some mental effort to consider REALITY and possible solutions.
I cut my parents a lot of slack. They're too old and have lived too long to worry about how scary the real world can be. However ... my ex ... she's intelligent and responsible, but still buys the leftist lies ... she has no excuse. She could indeed be "evil". :-)