The Chinese government banned ICOs. Naturally as a result, alt coins started dropping. People are fearful they won't be able to get their money out with the government cracking down.
For the next couple of days I think it will blow over and go back up, but only time will tell.
this may be the beginning of the end of cryptocurrency? because i think that other governments can take this as an example with all this repercussions...and let's be honest ... wich powerful government does not want to have full control over money?
Yes. Crypto is dead. Sell everything.
In all seriousness though, I think today's move was just a long overdue correction and had nothing to do with the Chinese government's statement regarding ICOs. Let's not forget we just touched a new ATH after a few days of hesitant floating between USD 4k,- und USD 4.5k,- so naturally the market needs to cool down a bit. The alts followed suit, because that's what they usually do when Bitcoin drops.