at their washington, d.c. gun control rally, but nobody knew he would actually be their commencement speaker until he walked out there on the stage. the students and parents giving him a big standing ovation and fallon gave some traditional graduation advice, threaded with a bunch of jokes that had the seniors laughing. afterwards, fallon tweeted out this, quote, congratulations marjory stoneman douglas class of 2018, you are not just the future, you re the present. keep changing the world. keep making us proud. the ceremony a blend of emotions and moods. jubilant, celebratory, and of course sad and heart breaking at times. it was just more than 100 days ago that their senior year was horrifically marred by a student who unloaded 150 bullets in six minutes and killing 14 students and 3 staff.