They are comparable, though, and that's exactly my point. They're not the _same_ by any stretch of the imagination, but it's just a weaker reading of history to refuse to consider themes that were common to the time period.
The Nazi camps were started for the same reason as the American camps: to contain and control a population believed to be subversive. They were indeed later used as part of an organized genocide, which is very important and makes them far more horrifying on a moral/human level, but it's willful blindness to ignore the deep similarities between a policy of containing and suppressing a racial group, and a policy of containing, suppressing, and exterminating a racial group.
The Nazi camps were started for the same reason as the American camps: to contain and control a population believed to be subversive. They were indeed later used as part of an organized genocide, which is very important and makes them far more horrifying on a moral/human level, but it's willful blindness to ignore the deep similarities between a policy of containing and suppressing a racial group, and a policy of containing, suppressing, and exterminating a racial group.