Explain the following statement: "People hate taxes primarily because of income effects while economists hate taxes primarily because of substitution effects."

What will be an ideal response?

Substitution effects are what gives rise to deadweight losses from taxes -- and whenever there are deadweight losses, there should at least in principle be a way to make some people better off without making anyone else worse off. Put differently, substitution effects are what makes price-distorting taxes inefficient, and economists don't like inefficiencies. But even if there were no substitution effects -- even if all taxes were lump sum (and not price-distorting) taxes, people would dislike taxes because they have to write checks to the government and can't consume as much as they could otherwise. So people will hate taxes even if there are only income effects.