CHATTANOOGA, Tenn. - Organized hate groups like the Ku Klux Klan have historically terrorized blacks and Jews in the Southeast. But the recent influx of Hispanic immigrants to the region has given hate groups a new target, and officials say Hispanics are increasingly targets of hate crimes. Former Klansman Daniel Schertz, a 27-year-old from the southeast Tennessee town of South Pittsburg, was indicted in June on charges of building pipe bombs to kill Hispanic immigrants. Imperial Wizard Billy Jeffery of the North Georgia White Knights denied any connection to the bomb plot and said he banished Schertz from the group,...