This is the lowest of low-hanging fruit.
Did they have a meeting together and agreed to carry out the same lie for the greater good???
This is why it doesn't help as much as you'd expect to provide better information, to expose a prominent member of the 'conspiracy' in a lie, or even to outright replace the public policy - the same culture and the same systems are still out there, resulting in a large fraction of the population reaching the same conclusions. Only education and cultural change (which are slow, operating on timescales of decades) can overcome this problem.