baneful

It had been fully confirmed by experience that they are daily misled into the most baneful measures and opinions by the false reports circulated by designing men, and which no one on the spot can refute.

Your opinion is very closely aligned with the opinion of the power structure itself, and this baneful behaviour can only come about if the vast majority of people are essentially ok with it.

And I am sad to see Schneier take the view that there is something inherently wrong about people forming conspiracy theories, as if being naturally suspicious of the State is a baneful development, rather than a hugely positive one.

It had been fully confirmed by experience that they are daily misled into the most baneful measures and opinions by the false reports circulated by designing men"What has been will be again, what has been done will be done again; there is nothing new under the sun."