Every chance I get, I like to remind people that a sales tax disproportionately affects lower income citizens. It's not a "fair" tax and it is not "equal." 

When you need new headlights for your car, no one checks to see your income level before assigning the sales tax. A person of low income ends up paying a larger portion of their disposable income than a wealthy person. 

There's no sliding scale on sales tax, but there sure is on income tax. While those words may be a boogeyman expression in Alaska, so too was "cutting the PFD" aka the "third rail in Alaskan politics." 

Either we hurt poor people disproportionately, or we make the most fortunate members of our society shoulder the burden. It's about % not $'s folks.