Kyser is right that tax is technically legalised extortion, so much so that income tax never actually made it into law in the USA. (
Another story).
Still the state has to be paid for, and there is no doubt that those who make money, in whatever way in society should pay a certain amount of their income to finance it.
There are many people who gain from the land, both as landowners and as income earners. The income tax is generally fair, though I would prefer a higher tax-free bracket. But the land owners are not paying their fair share due to the tax changes under the last Conservative government. I want to see a replacement for the council tax which is based on who owns the land. All land owners could pay by the square metre, and that would even up the situation. At the moment the land owners hardly pay anything, while the poor pay too much, see below.