Propagandists is the term for much of the media. 'Filthy liars' would be another. Slanderers, libellers, people actively trying to lead the nation down a road of destruction and misery.
When they actually start committing acts of violence, then 'terrorist' becomes accurate.
Use the right term, at the right time. The truth is enough of a rebuke of their character and conduct; you exaggerating recklessly actually makes it harder to show what they are, because easily-refuted allegations plant a seed of doubt as to the legitimacy of any future allegations.