Margaret Aspinall lost her son James in the Hillsborough disaster in 1989. Her 27-year campaign for justice makes her an inspiration, and Don Riddell's hero. My Hero revisits Aspinall’s poignant words from 2016, when she spoke to Riddell for CNN documentary “Hillsborough: They’ll Never Walk Alone.” http://cnn.it/2n3f18p | CNN Heroes