Please do some research , you ' ve been reading outright lies . The emails were problematic , but there is literally zero evidence for anything you just said . <| sep |> No , HRCDNC keeps being deflected to when people can ' t defend Trump . <| sep |> Firecrackers don ' t adequately price externalities to health and quality of life . You pay only for the enjoyment you get from them , but a lot of other people pay the full ' price ' in other forms . If perfect economics were possible we would allow others to pay money to stop you from using fireworks . Since that is kind of hard to do practically , instead we can tax them at x % again hard and costly to implement or ban them and impose a fine easier to implement , because a very small number of fines can scare a large number of people . Similar externalization effects things apply to cars as well , but it ' s easier to price in the externality by raising the price of oil and using it to subsidize public transport and clean energy .