Hi there what happen all altcoins and bitcoin is dumping but why? Im panic about that and the coinmarketcap still dumping this is the end of cryptocurrency? Anyone knows about this? A litle worried about what happening now. 
There has been plenty of news about what's happening. Are you familiar with new sources like Coindesk or Bitcoin.com or Google?
Recently the South Korean government announced plans to regulate, restrict, ban elements of bitcoin or cryptocurrency trading. This news, even though it's just a short comment and not legislation or law, has likely driven the sell off we're seeing right now. And when one coin sells off others are likely to follow. A lot of the investors are new, thus they tend to "follow the leader or the herd".
Come on, this is not happen for the first time to cryptocurrency until you have to say this is the end of cryptocurrency. Although Bitcoin has decreased by almost 40% in the last 24 hours, it's still very reasonable when you see the price jump before this. Altcoin? They just following the kings movement, because altcoin still exist because bitcoin want it to. This is all just about bitcoin, there are rumors that prices are falling because of the holders of bitcoin futures contracts.