Boston Celtics win record-breaking 18th NBA title in Game 5 over Dallas Mavericks

The Boston Celtics are back on top after winning their 18th NBA title in their championship win over the Dallas Mavericks. NBC News’ George Solis how fans celebrated in Boston after their home win. » Subscribe to NBC News: NBC News Digital is a collection of innovative and powerful news brands that deliver compelling, diverse and engaging news stories. NBC News Digital features , , , Nightly News, Meet the Press, Dateline, and the existing apps and digital extensions of these respective properties. We deliver the best in breaking news, live video coverage, original journalism and segments from your favorite NBC News Shows. Connect with NBC News Online! Breaking News Alerts: Visit : Find NBC News on Facebook: Follow NBC News on Twitter: https://twitte