Sanders once likened poor whites to blacks under apartheid

Bernie Sanders once compared poor white Vermonters to black South Africans suffering under apartheid. At other times, he likened the plight of some working people as well as imported foreign laborers to slavery.
Now that Sanders is rising in the polls and expected by many to win Iowa, rival Democrats are bringing to light his decades-old comments in an effort to question the senator’s stances on race and to underscore the challenges he has had with black voters.