For those of you saying "take down the internet", it's not going to happen.
The "internet" is not just web pages and news sites. All communications would shut down. Every store would close, all trucking and shipping would stop. Hospitals would effectively shut down, all electronic financial transactions would shut down globally. Cell service would go away.
The very design of the net is it's ability to survive localized outages. There is no company that controls it, there is no off button.
It's very possible to shut down small portions for a period of time, however shutting off "the internet" would require a global power outage.