AAAAAAAAUGGHGHGHGHGH. 

Paying a "FAIR SHARE" is the definition of an income tax, because income is taxed proportionally to your income level. A sales tax is the definition of an "UNFAIR" tax because it taxes low and high income earners the same. While that may seem "fair" to you, a few hundred dollars of taxes means a lot more to a low income earner than it does a wealthy person. 

I wish you could understand this, but no matter how confusing it is to you, sales tax is what actually hurts lower/middle classes disproportionately.