In an age of pervasive information flows, governments do not defeat fake news. It's the people as a society who do.
A spokesman for Facebook said it had a responsibility to handle any government request to restrict alleged misinformation "carefully and thoughtfully".
Freedom of speech does not give one the licence to propagate falsehoods.
Take a hard look at the science on homosexuality, and monitor public opinion closely, before deciding whether to repeal law criminalising gay sex.