With thanks to @Martin_K for trying to interpret what I said, What I am really saying is that there is so much “News” out there, that little of it has any effect at all. Mostly the reporting of it is extremely biased to fit the agenda of the “news outlet” and if the price action does not go in the expected direction of the “News”, the Analysts and Commentators will look arounfd until they find something.
No matter how obscure that “something” may be (Hence my light hearted examples) the "Analysts will grasp it and because they NEED an explanation, they Will use it as an “Expplanation” of unco-operative movements.
The reality is that taxes on alumiinium for example are just not “Interesting enough” to be mainstrem and therefore just get ignored. Hence your quandry.
Now that may be ok - IF you actually know that taxes changed and go looking for it hard enough, you may find it, but I don’t think there are ANY news sources, which have the resources to actually find every bit of what they regard as “obscure” changes.
When prices are rising, “news commentators” will report “News” biased towards being “Good News”. WHan prices are falling, they will report only “Bad News”
At “Tops” all news will be “Great news” and at “Bottoms” all news will be “Bad news”
Human behaviour is very predictable some of the time and is often wrong footed by the “Consensus of opinion” - “Consensus” is a very BAD indicator unless you take a contrarian view !