i think philip kennicott of the washpost is one of the best critics working in the mainstream press. here's a really rather rich and surprising review of the 9/11 museum. the range is part of what i like: so it's actually a broad piece on contemporary museums, which have moved to a model where they construct the experience as a narrative, which among other things might be too directive with regard to the experience of museum-goers. also it works through the question of where the culture is on 9.11 and the war on terror etc: in other words, there's a lot of good context.
to my way of thinking, the idea of mourning 9/11 is utterly polluted by the fact that it was used as an occasion to complete the transformation of the united states government into a profoundly authoritarian system: the end of anything i would recognize as the american experiment. we're still blahblahing about the supreme court or the bill of rights, or we still effortlessly call ourselves a democracy, comparing others unfavorably to ourselves. but try to picture what jefferson or tom paine would say about a government engaged in universal surveillance of its own citizens, a government that practices indefinite secret detention, torture, and so on. that is what i would mourn at ground zero. those deaths turned into a mere tool for the consolidation of abusive power. it wasn't al qaeda that accomplished that: it was american politicians and citizens quaking in fear. they showed that, though they've got the missiles, they are pussies, all day every day.