[xorcist]

All of your examples did tank the stock market. At least in the meaning a 20+% drop over a time period in the order of months of less.

They are however not examples of long depressions. Which I think is reasonable to expect we'll see less of, given that more and more regular people feel the need to put their money in the stock market. There is simply no alternative. And every time we reach new heights. This is also expected.

Will this go on forever? Probably not. But it won't look like the 1930s. The stock market is a crowd, not a science.