If you do not pay taxes, first you will receive a letter, then a person in uniform, then you will be put in jail, and if you resist - you will be killed. Intermediate steps between non-payment of taxes and murder are many, so it does not immediately appear that death is at the end of the chain. But if it were not there, the intermediate steps would have no effect. You think, the letter has come.The meaning of the letter is to gently hint at the fact that it is necessary to pay in a good way - the threat of physical punishment for resistance in it is almost not noticeable. But each successive element of the chain is more and more unpleasant.
that's why people pay taxes