CHARLOTTESVILLE, Va. — The mother of the young woman mowed down while protesting a white nationalist rally in Charlottesville urged mourners at a memorial service Wednesday to "make my child's death worthwhile" by confronting injustice the way she did."They tried to kill my child to shut her up. Well, guess what? You just magnified her," said Susan Bro, receiving a standing ovation from the hundreds who packed a downtown theater to remember 32-year-old Heather Heyer.Heyer's death Saturday — and President Donald Trump's insistence that "both sides" bear responsibility for the violence — continued to reverberate across the country, triggering fury among many Americans and soul-searching about the state of race relations in the U.S. The uproar has accelerated efforts in many cities to remove symbols of the Confederacy.Heyer was eulogized as a woman with a powerful sense of fairness.