Public opinion changed in significant ways over the course of Barack Obama's presidency on issues such as the economy, trust in government and race relations.
The two major decisions recently handed down by the U.S. Supreme Court have very direct relationships to public opinion. One of the decisions fits well with majority public opinion. The other, in a broad sense, does not.
Support for legal same-sex marriage is strongly related to religion and partisanship. Black Americans, who tend to be Democratic and highly religious, are particularly cross-pressured on this issue.