It's a clandestine group of
BTC Whales dumping huge amounts of
BTC on exchanges, to push the price down, and for noobies to panic and exit the market.
After this is over, they would buy back all the coins they sold, and also the cheap "noobie" coins. They do not want a small part of it, they want it ALL.
Seriously - US over Regulation + over supply of
BTC because lots of people are buying, BIG SCREEN 3D led curved TV's from Dell.