.. are condemned to repeat it. Or, in other words, try reading this news article about Switzerland banning minarets, replace the words "minaret" with "synagogue" and "Muslim" with "Jewish" and then ask yourself what it reminds you of? A simple semantic trick, but a very useful one.
Meanwhile, I have become slightly addicted to Galaxy Zoo. When Earth becomes a bit too much, it's nice to disappear into space. Literally.