 During this period, they often forged alliances with Southern police departments, as in Birmingham, Alabama; or with governor's offices, as with George Wallace of Alabama.Several members of Klan groups were convicted of murder in the deaths of civil rights workers in Mississippi in 1964 and children in the bombing of the 16th Street Baptist Church in Birmingham in 1963.As of 2016, researchers estimate that there are just over 30 active Klan groups existing in the United States, with about 130 chapters.