That's not how our country works. In order to bring back slavery you would need a 2/3rds majority in both houses and 3/4ths of the states, which is quite a lot more than a 'majority of society'. Regardless of that, there is certainly some rational limit to what any legitimate society should be able to do, but you're again treading close to a reducto ad absurdum argument. Raising marginal tax rates by 3% is not even remotely similar to the mass enslavement, rape, and murder of millions of people, and so to attack one with the other is a bit silly.
I will insert a caveat that I didn't think was necessary, that there is of course a rational limit to what society can morally do to people that reside in it. But I think that any reasonable person would admit that a 3% tax increase on dollars earned in excess of $250,000 is within those reasonable limits. Within those limits, the only thing that matters is what society as a whole believes is best for it. Nobody is forcing you to participate in America and there are many other places you could go if you so choose. Again, you are also free to try and change the laws here if you think you have a better idea. (and maybe it will be, and we all will benefit!)
All that being said, an argument about what is 'fair' or not holds very little water with me. As more conservative minded people frequently say, life isn't fair.
EDIT: Of course I want elected people to decide what is best for society. That's literally the whole point of representative democracy. If you don't believe that, then you should tear up the Constitution.