When Cristina Miranda-Gilson was growing up in South Miami, performing community service was a mandate from her mother, Mercy Diaz-Miranda. “Whether we wanted to or not, we had to help,” Miranda-Gilson, 61, said about the importance of volunteering that she learned from her mom, a former newspaper publishing executive. “It just really is about giving back,” Miranda-Gilson said. “And in giving back, you gain so much.” ...