Pessimism about race relations in America is higher than it has been in nearly a generation, according to a new Washington Post-ABC News poll. In the aftermath of the mass shooting of police officers in Dallas and the high-profile police shooting deaths of two black men, in Baton Rouge and suburban St. Paul, Minn., more than 6 in 10 adults say race relations are generally bad, and a majority say they are getting worse. {..snip..}