It doesn't really matter where the money is taken out from. Demand-side, supply-side, rich-side, poor-side, any side.
No matter where you remove the money, any money taken out of the private sector will result in a loss of private production. When the public sector grows, the private sector shrinks, and typically by a larger amount than the public sector grows.
The goal of any frugal limited government should be to achieve the lowest possible tax rate to cover the fundamental duties of the Federal government. Enforcing the rule of law, protecting the nation, and running international trade.
Higher tax rates will never have a positive effect. A tax on a corporation is merely passed on to consumers and employees. A tax on employees is passed on to lower purchasing, and lower growth. Tax on the rich results in less investment and employment. Tax on the poor results in lower demand and markets. Taxes on working encourages non-working. Subsidizing non-working encourages fewer to work.
Instead, we have a system where we jack up the taxes, so politicians can engage in rent seeking. They impose moronic tax levels, and then act shocked when the rich take advantage of tax shelters, which reduce how much taxes they pay, which encourages politicians to raise taxes.
BBC News - Millionaire tax avoiders 'shock' chancellor
Meanwhile, these exact same politicians offer tax deductions and exemptions on a silver platter routinely for the purposes of extracting contributions from the public.
The bottom line is that demanding higher taxes will never actually result in rich people paying more taxes. The government loves higher taxes because it allows them to sell more and more deductions and exemptions to the public, which makes them rich. Every government officials knows the average American, and especially the average leftist, even the most intelligent of leftists, when faced with news that company X, or rich person Y pays very little tax... they'll never blame the politicians who specifically create the need for tax shelters by raising tax rates, and then offering the tax shelters for a price.... but will always ignorantly default to "companies are evil, and our benevolent politicians are innocent".
But the vast majority of the left, and a growing number of the right, are all too blinded by hate and envy to understand anything beyond their own selfish desire for someone else to pay for everything they have.