By Philip Pullella and Tim Johnson EDMONTON, Alberta (Reuters) -Pope Francis on Tuesday praised the indigenous tradition of showing great respect for elders and learning from them, saying their memory must not be lost in modern society’s “fog of forgetfulness.” Francis is on a week-long tour of Canada to apologize for the Roman Catholic Church’s role in running residential schools that tore indigenous children away from their families and became places where abuse was rampant. His words were particularly poignant for indigenous communities because the residential schools, which ran from 1870 t…