The Pew poll reports, "Americans are relatively unconcerned about the wide income gap between rich and poor." It says, "barely half (47%) of Americans think that the rich-poor gap is a very big problem for the U.S."
Data from other polls bear this out. In four Gallup polls asking Americans, "What do you think is the most important problem facing this country today," the gap between rich and poor was named by only one percent (in three of the polls) or two percent (in one of the polls) of respondents. That's less than federal budget deficit/debt, unemployment/jobs, education, or "ethics/moral/religious decline."