There are a variety of processes whereby individuals can reach biased conclusions about social, political, and scientific matters.This talk proposes that features of 21st Century society and the nature of our contemporary information environment exacerbate group differences in beliefs, attitudes, and summary judgments. I present data to catalog the scope of contemporary perceptual disagreements and to identify some of the ways that media-related and social factors that can deepen existing cleavages. Approaches to mitigating group differences in this environment are then explored.