This very vague statement can be used in many unexpected (or expected) ways. But yeah, it's common to try to sneak these things in in "won't someone think of the children!?" bills. That way anyone that objects to the bad part of the bill can be painted as supporting abhorrent acts.
A change in government to another party may use the same law but in opposite directions to what you or I might think is acceptable. Will one be able to speak truth to power if the power says the truth is harmful?
There are of course going to be many clear cut cases in this new law. I would even go so far to say the majority of them are going to be obvious cases of hatred no matter what politics and beliefs one has.
But almost all of these cases will be covered by existing laws! It's already illegal. So why the new law? What's it really about?