There are some other videos online that are saying it's the big banks that are manipulating the market. Look at the link and check out the Dow, S&P and Nasdaq and you will see similar trends in the graph the last few days if you switch it to the week mode between the 3 and even btc and eth

http://money.cnn.com/data/markets

Cryptocurrency is very volatile to begin with but add the banks that are the true whales to the equation they can easy manipulate the crypto market and scare off a lot of investors while making huge gains. Granted this has not happened in the stock market on a big of scale as it has in the crypto world the last few days many experts have predicted the worst economic collapse in our lifetime.

This article is a great read to understand why these predictions are being made, basically the market dips around every 4 years and this is one of the longest streaks of the market not dipping in 8-9 years. Housing cost is rising, half of Americans are living paycheck to paycheck, and the federal reserve is rising interest rates for people who are barely getting by.

http://www.businessinsider.com/jim-rogers-worst-crash-lifetime-coming-2017-6