Do not panic, because this has happened several times before and it always bounce back from March onwards. If you look at the other Alt coins, you will notice that they are also going down, so there are not a new movement from Bitcoin to other Alt coins.
I cannot substantiate my claims, but I think some Fiat whales are slowly dumping coins to manipulate the price. I cannot pinpoint the motivation behind this, but I know they are slowly cooking the frog. ^hmmmmm^
I agree with you, I do not know what it means to manipulate bitcoin prices, but I know bitcoin will definitely go back up and be patient now. We can not confirm that someone is manipulating, but the price fluctuations must be man-made in the regulation.