Um... so a cartoon of a man with an Amnesty suitcase saying the quality of the snack food reminds him of the holocaust isn't saying that human rights groups equate bad snack food with the holocaust? Saying that a prison where people are sent without a proper trial and subjected to ill-treatment is like a gulag isn't the same thing as saying the US is as bad as Stalinist USSR or Nazi Germany.

As far as I can make out, the reasoning of people criticising Guantanamo is that, if the US wants to be a global arbiter of good and evil, it should have immaculate human rights standards itself.