It's best to think of what you're doing online as casting a net in an ocean. You're going to grab some fish, but you're not going to get everything on the bottom. That's what the Deep Web is for, the seedy underbelly of the Internet where you can get everything from assassins to murder your loved ones to illicit materials that probably shouldn't be named. Be careful though, while accessing the Deep Web itself is not illegal, accessing some of the content within can net you some hefty jail time if caught.
Fact: You need to download TOR and reroute your IP to access anything even close to illegal content on the Net. You can download TOR, which in of itself is perfectly legal, here.