The life and legacy of Nelson Mandela were honored at Brandeis this week as Kweku Mandela-Amuah and Ndaba Mandela, grandsons of the late anti-apartheid hero, delivered the keynote address at the school’s annual festival of social justice, “Deis Impact!” The two founded Africa Rising Foundation, which aims to instill a sense of pride and purpose in young Africans across the globe. Among those in the audience were actress Eliza Dushku and her mother, Judy, who spoke at last year’s “Deis Impact!” about THRIVEGulu, a not-for-profit they created in Uganda to support the healing and rehabilitation of people traumatized by years of civil war.Mark Shanahan can be reached at firstname.lastname@example.org. Follow him on Twitter @MarkAShanahan. Meredith Goldstein can be reached at email@example.com. Follow her on Twitter @MeredithGoldste.