If you want to see riots in the streets because people literally can't afford food and healthcare, yeah, sure, go for it.
The price of labour is now artificially cheap because the price of food is not taken into account due to subsidies and foodstamp programs, as well as the huge labor/population supply that such policies have created. There is no way the market could peacefully absorb such a massive distortion and so if we were to ever attempt it, no doubt there would be countless individuals chanting "see, we told you the market isn't the solution". These things need to be phased out over generations so as to avoid massive starvation and riots by the poor.
Which healthcare subsidy would result in riots in the streets?
Also keep in mind that the US has been without the 16th amendment longer than it has been with it, so anything based off of an income tax must not be intrinsically important enough to automatically result in street riots. Though of course an irresponsible and sudden withdrawal could certainly cause problems.
Off the top of my head, Medicare and veteran's health benefits. I don't know that ceasing flexible spending accounts (money put in an account, pre-tax, just for medical/health expenses) and the tax deduction for medical expenses above a certain amount would be riot-worthy.
One item in consumer's favor is that food items are usually exempt or treated at a lower sales tax rate.