Because they don't work. When the Rich get tax cuts, they don't invest it or hire workers in the USA. Thats not a smart thing to do when hiring sweatshop workers in Mexico, India, or China are far cheaper than American workers.
That of course, is not smart for the the US economy though... The least we could do is completely eliminate tax cuts for those that hire off-shore workers since when those workers make products that we buy, we are basically taking money away from our country and putting it in countries like China.
They don't work and they never did. The notion that they did was a fairly recent (early 1980s, late 1970s) invention of conservative "economists" like Arthur Laffer.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.