As the thread title says, do Unitarian Universalists believe that all people are saved?
Even racists? Even mass murderers? Even the likes of Hitler or Stalin?
For all practical purposes, most Christians today — even Catholics — believe in universal salvation. The only exception would be fundamentalist evangelical sects who believe in an absolutely sharp division between those who are “saved”, i.e., have accepted Christ as Lord and Savior, and everyone else in the world, who is damned according to their theology. (They do make an exception for children who are under the “age of accountability”, ca. 12 years. Not clear where they get this — it’s a variation on the theme of the Catholic “age of reason”, ca. 7 years.)