There's no doubt that this law is problematic in the sense that many people, when they hear something with which they disagree, say it's hate speech and want it prosecuted. The way that is defended against is through the requirement of consent of the Attorney General, but what we've seen so far is that the requirement of consent of the Attorney General has been saying no to too many, rather than too few.
Our solution is to keep the consent, because otherwise the problem you pose would exist, but to have clear guidelines that could deal with issues such as that as well. All the hypotheticals you could imagine could be put into guideline form.