is this class warfare?

Scientists at the University of California at Berkeley analyzed a person’s rank in society (measured by wealth, occupational prestige and education) and found that those who were richer were more likely to cheat, lie and break the law than those who were poorer. “We found that it is much more prevalent for people in the higher ranks of society to see greed and self-interest … as good pursuits,” said Paul Piff, lead author of the study and a doctoral candidate at Berkeley. “This resonates with a lot of current events these days.”

is it even true?