Taxes follow a curve similar to a bell in which those at the opposite sides, those that are incredibly rich and those that are very poor, do not pay much in terms of taxes, but as you begin to move to the center, the taxes you need to pay grow significantly, as we must remember that we pay taxes not only when we do so explicit to the government, but we do so when we make almost any transaction, the issue is that while I can understand those that have nothing to pay a low amount of taxes too, it is a problem when the rich do it, as there are people out there which are billionaires and that pay less taxes than we do, and this is clearly unfair.
That is right. The ones at the top and at the bottom aren't heavily impacted by taxes. The middle classes are. The government protects the richest, because if regulators introduce tax policy against them, their wealth leaves the country immediately to a more friendly country which won't charge them at all... Meanwhile, the poors don't have much to contribute and heavily rely on welfare programs to survive, so the final burden is carried by the middle classes, who are the most prejudiced ones, since they want to work and thrive, but find many obstacles on the way, because the government sabotages them all the time through abusive taxes.
As far as I've seen, countries haven't managed to get rid of this vicious cycle yet. Here in my country, officially, around 40% of the yearly income of an average citizen returns to the government through taxes. That is insane, and for much less we already had armed revolts in a far historical past against the imperial government.