I suspect that this is why end up repeating history in one form or another over and over again. Stuff happens, we learn some lessons, we forget about the stuff (or our institutional memory does) and then we forget the lessons setting the stage for stuff to happen again. Frustrating business, more so to see it happening on such a short timescale. If it was something that the Romans did I could get why it isn't remembered as acutely but this is recent history and even far outside the country where it happened this - used to be - is common knowledge.