A few years ago, there was a book where the general implication was that Muslims in Europe would gain power/majority just through sheer "out-breeding" of other ethnicities/religious groups. This was deemed to be 'hate speech' because it might incite people to commit hate crimes against Muslims.
Note: I did not read the book, so I don't know how inflammatory it was. Just adding an anecdote.
The book itself was not found to be hate speech. The Canadian Islamic Congress made a human-rights complaint about an excerpt from it, which was published in Macleans, at both the federal and (multiple) provincial levels. They never should've been brought in the first place, but all cases were eventually dismissed.
That's ... odd, or based on outdated statistics per David "Spengler" Goldman, in his writings that include titles like "The Closing of the Muslim Womb" (one of the things freaking out the rulers of Turkey and Iran). About the only place where it might be playing out that way the last time I checked is the U.K.
Note: I did not read the book, so I don't know how inflammatory it was. Just adding an anecdote.