The great Gustavo Dudamel, music director of the Los Angeles Philharmonic, wrapped up a two-day visit to Harvard with an event at Sanders Theatre that included a 30-minute rehearsal with the Longy Sistema Side by Side Orchestra and a sit-down with LA Phil CEO Deborah Borda. The celebrated Venezuelan conductor was awarded Harvard’s Luise Vosgerchian Teaching Award in recognition of his artistic conscience and commitment as a music educator. Asked about his goals for the future, Dudamel kept it simple: “If I want to do something in my life, it’s to unite people, not to divide.”