Here is a 25 year monthly chart of the Dow Jones. As you can see from the last 2 market crashes, we had a huge run up in stocks. In 1998, the RSI showed overbought, the MACD and TRIX crossed, thus giving a sell signal only for the market to continue higher(FAKEOUT). The bears continued to get destroyed and the bulls continued to buy the dip. With the bears utterly destroyed in 2000 and the sheeple fully invested, the MACD and TRIX crossed down again, this time giving the real sell signal and sending the market down to the 125 Month moving average exactly, before reversing. Now, if you look at 2006 and 2008, you see the same thing occur, except the Dow didn't bottom at the 125 Month moving average, it went further and bounced off the 300 Month moving average.
Now, fast forward to today, and you see the same setup. In fact, we are half a year into the decline already and it looks ready to pick up steam only to bottom sometime in late 2016 or early 2017. This time support looks to be the 525 Month moving average, which stockcharts doesnt have data going that far back, but I suspect that it is in the 4000 point range.