I agree that "trickle-down" is usually how critics attack tax cuts for the rich. However, we have seen several rounds of tax cuts for the rich and the language

I agree that "trickle-down" is usually how critics attack tax cuts for the rich. However, we have seen several rounds of tax cuts for the rich and the language used to justify it is something like "these tax cuts will stimulate growth and that's good for everyone". The general point of the article is that tax cuts for the rich lead to more inequality which is hard to argue with.