Nearly half the people in the country pay no income taxes at all
This is an outright lie. You probably don't even realize it's a lie because you've bought into the propaganda. Every person who hold a job pays taxes including those on income. Social security and medicare taxes are NOT exempt-able and they ARE income taxes. The only way to not pay social security and medicare/medicaid taxes is to not have income, something the wealthy are remarkably good at not paying for. On top of this they pay their state taxes, including income, cigarette, alcohol, gas, sales and property along with all the other miscellaneous taxes and fees. In fact as a percentage of their income the poorest among us pay the highest proportion of their income in taxes than anyone else.
The nugget of truth that makes your lie so insidious is that the poorest among us don't pay FEDERAL income tax but they still pay taxes and they still pay income taxes. This little lie and deception allows you to paint entire segments of our society as non-contributing freeloaders and it's NOT TRUE.
All your bullshit numbers are based solely on federal income tax. They disregard all the other taxes entirely as if they don't exist and it's complete and utter horseshit. The most important fact, the one you completely ignore is that the poorest among us pay something like 50% of their income in various federal, state and local taxes. As a percentage of income they are the highest taxed individuals in this country.
Personally I'm a big believer that those people who have benefited the most from the system and have the means to support it should be the ones that have the highest burden in paying for it. That is NOT asking a lot.