I think a lot of people got into a situation where profits were spinning .That is, all eggs put in one basket and the basket fell . This is a lesson for all,quieter,think a cool head and everything will be fine,keep calm friend 
It happens when people do not take their decision wisely. they think just put all the money in btc or some coin which will make them rich. It does not happen and investing all money in crypto itself is very risk and should be adjusted accordingly.