Austin Metcalf 's father,  Jeff Metcalf , has a theory about why  Karmelo Anthony 's trial included no Black jurors ... and he minced no words in his explanation. Jeff went on Sarah Fields ' "JinxedSip" podcast and unleashed his rage toward those upset with the racial makeup of Karmelo's murder trial jury ... saying it's because Black folks can't be unbiased or even get their own lives straight. Just watch the shocking clip ... after telling Black people they were unable to hold bias from the