(Reuters) -A California state judge tentatively ruled that nearly 6,000 Black factory workers can sue Tesla as a group for the electric vehicle maker's alleged failure to address rampant race discrimination and harassment at its Fremont plant. California Superior Court Judge Noel Wise in Oakland said in a written order issued on Wednesday that the lawsuit presents questions common to all Black workers at the plant of whether Tesla was aware of the alleged misconduct and refused to take steps to prevent it. The named plaintiff, former assembly line worker Marcus Vaughn, first sued in 2017, alleging that Black factory workers were subjected to a range of racist conduct including slurs, graffiti and nooses hung at their workstations.