Lower income Americans are the group most likely to think they should be taxed more

• Lower-income Americans were the group most likely to say they should be taxed more, according to the Pew Research Center. 
• 72 million households didn't pay federal income taxes last year.
• A majority of Americans also maintain that those making over $400,000 a year should be taxed more.

"Tax the rich" may be the popular rallying cry, but lower-income Americans are feeling the most guilt about not being taxed enough.