Transcript for Prince William and Kate Commemorate the Victims of the Orlando Night Club Shooting
Finally tonight here, prince William and Kate, paying tribute. The world has watched prince William grow up. The first baby photos. His wedding day. And this week, at the U.S. Embassy in London, signing the condolence book for the victims of Orlando. With our deepest condolences, and with our thoughts and prayers to all those affected. And as prince William turns 34 next week, he is taking a stand tonight. On the cover of the lgbt magazine "Attitude" in the UK, he is leading the charge against bullying. The campaign was already in the works before the Orlando massacre. Tonight, with even more resonance. Prince William, talking just today. As Catherine and I started our family a few years ago, I was alarmed by the reports of online bullying. Reporter: Prince William telling the magazine, any young person Reading this who is being bullied for their sexuality, don't put up with it. Princess Diana fought to give a voice to whose that did not have one. Tonight, her son following in her footsteps, saying the lgbt's strength of strength and opt schism should give us all encouragement to stand up to lying wherever we see it. I'm David Muir. I hope to see you right back here tomorrow.
This transcript has been automatically generated and may not be 100% accurate.