In total dollars yes because we should each pay a proportionate share of the load. However, the idea of a progressive tax is very simply one group deciding that they deserve to take from another group under threat of force. Look at what Torrusty just said. He or she acknowledges that the "rich" generally do actually earn the money, but Torrusty and those of like mind deserve to take at will because they have the ability to take via mob rule. They want it, therefore they will take it.
For those who have educated themselves about who the "rich" really are, it is very clear that the bulk of that population (around 80% of all millionaires) simply followed a path of saving and building a business or investments over time. It's not glamorous and certainly not quick but those are the actual people Torrusty wants to squeeze. Think about that, they sacrificed for a lifetime to build wealth, only to have others dictate to them that they are now somehow beholden to those who were unwilling to make the same sacrifices.
My facts are easily checked: The Millionaire Next Door by Thomas J. Stanley is the most compressive study on millionaires to date, and should be read by those who are constantly attacking the “rich”.