BTC has the power to manipulate the electronic money market. All Altcoin are affected by the price of Bitcoin and the Altcoin value is proportional to the Bitcoin price. Bitcoin is king in the electronic money market. There is no Altcoin that is independent of the value of Bitcoin.
Negative influence on bitcoin robably will take some place but not for long time, only failures in computer systems. Political, economic - all this problems are nothing for bitcoin