No, I take issue with liberals because I think that liberals because liberals often take for granted that liberalism is a neutral, ideologically impartial, view from nowhere (to quote Thomas Nagel) standpoint, when, in fact, it's a standpoint that is just as much constricted by the tradeoffs that underlie every ideological framework.
To put it more succinctly, liberals, I believe, are more reluctant to acknowledge their blind spots, because they're more insistent that they couldn't possibly have blind spots, than other political groups within society. That's why I'm generally more critical of liberals: not because their sins are more egregious, but because I find that liberals are exceptionally allergic to self-criticism in the first place.
I don't think the left (in the stricter sense) suffers from this, at least not to the same extent that liberals do. And I suspect that's in part because if you're not in the mainstream, its incumbent on you to articulate your position in a way that it isn't for the dominant ideology. But I think it also has to do with the philosophical origins of liberalism in the Enlightenment tradition (and yeah, I'd go all the way back to Descartes for that, if you want me to elaborate.)
I don't think it's necessarily the case that the conditions are economic, depending on what you mean by economic. (So what do you mean?)