DALLAS — A Dallas County jury has found ex-Balch Springs police officer Roy Oliver guilty of murder in the death of 15-year-old Jordan Edwards, an African-American youth who was unarmed when Oliver shot him in April 2017. The jury deliberated for about 12 hours over a period of two days before reaching its verdict. The courtroom erupted in cries and cheers from Edwards’ family afterward as they clapped and hugged each other. Odell Edwards, Jordan Edwards’ father, said his family is relieved and happy. “It’s been a long time, hard year and we’re just really happy,” he said, holding back...