I was speaking generally about what it means to be a police state. But if you want to go back to the narrower topic at hand, that's fine too:
All they need to do is not illegally stream copyrighted content.
Oh it's that easy, eh? I'm not sure I agree.
First of all, consider the fact that pretty much everything on the Internet is copyrighted. That means -- technically -- this law applies even to web pages as much as it does audio or video.
Second, remember that this doesn't just criminalize knowingly uploading something without authorization, or even downloading it and knowingly keeping the local copy without authorization; it criminalizes mere "streaming." Consider the fact that in many cases, you have to "stream" something (i.e., download it to your temporary cache, without intending to save it permanently) -- such as a web page -- just to see what it is. You literally can't know if a particular act breaks the law until after you've done it!
Third, copyright infringement cannot be determined just by looking at the act of streaming itself the mere fact that a copyright on the content in question exists, but instead hinges entirely on whether you have permission from the copyright holder or not. In many cases, even seemingly-legitimate downloading could turn out to be copyright infringement. For example, even mainstream, legitimate sites like Youtube have infringing content uploaded to them all the time and there's pretty much no way for you as a third-party to know whether the uploader had permission from the copyright holder or not. Moreover, even if you're downloading/streaming from a site controlled by the copyright holder himself (which you would think should imply tacit permission), you might be violating something in the fine print of the ToS which revokes your permission and thus criminalizes you.
And sure, you might say -- like the copyright-maximalist quoted in the article does -- that "the new law will most likely target individuals and groups making a business out of selling illegal content." But the fact remains that this law could be used to nail pretty much anyone to the wall for a 10-year prison sentence, if the prosecutor was pissed off at them enough. And that's fundamentally unjust.
To illustrate my point: if you're in the UK, you are now a felon. Why? Because of the following:
I, mrchaotica, as the author and copyright holder of this Slashdot post, hereby declare that any access, streaming, or downloading of it by the person with username "91degrees" is unuthorized and thus copyright infringement.
Too bad you had to commit the crime to find out about it, huh?