The thing is, Jews have been evil and destructive sicne long before any of these events. Since before Christ, they've been Satanic and corrupting on anything they've touched. A lot of the events some people here see as bad were good for us, but corrupted by the Jews. This does not make the ideas these movements encapsulated bad, it just means the Jews are doing the typical Hebraic thing of parasitizing off of us and exploiting/coopting our best qualities and ideas.

However, as far as these events go, the worst for Western Civilization was probably World War I, or more accurately, the period surrounding it and the events immediately preceding and following it. The Boer Wars, the death of Monarchy, etc. were disastrous for us. They were the culmination of certain subversive elements that these governments and institutions did not see or did not count as subversive or threatening. As previously stated, things like the Enlightenment, Protestant Reformation, etc. were not necessarily bad. Yes they introduced certain ideas that were taken advantage of, however the Jews and their ilk will always take advantage of any idea they can, it's their nature. So to say these ideas are/were inherently bad because they were taken advantage of is ratehr stupid, in my opinion.