By SADIE GURMAN, Associated Press:  An Ethiopian jail guard accused of torturing and killing dozens of people during government-sponsored violence in the 1970s was sentenced Friday to 22 years in prison for immigration crimes by a federal judge who said the U.S. cannot become a refuge for human-rights violators.  Defendant Kefelgn Alemu Worku (kah-FEH'-lun ah-LEE'-moo WER'-koo) had lived quietly in the Denver area for eight years until 2011, when another Ethiopian recognized and confronted him outside a cafe with the words, "I think I know you," before alerting authorities.  Read More…