The push west defined the US for its first 150 years, but today our frontiers are in more amorphous regions. But great expansions are not easily managed, and how to patrol the frontier has been a problem for great nations since the Roman Empire. The Wild West always turns out to be a refuge for outlaws, and good sheriffs are needed to keep the place safe for us schoolmarms and homesteaders. Like most of our worst nightmares, these online bombmakers and racists are all people or organizations we can't see. We don't know what they're plotting online, because they hide in the anonymity we've been permitting online.
People are always afraid of the dark.
I think the only workable long-term solution is not to hide some parts of the Internet, but to make all parts of the Internet as honest as possible. I can be fingered on the WELL, and my real name is there, along with a bio. Heck, I'm even listed in the phone book. I am who I am, and, if everyone were, no one would need to hide. It'd be just like the real world.