Holtby, the Capitals' Hockey is for Everyone ambassador, has been a visible and vocal advocate for the LGBTQ community and human rights.
"There are people here who understand that there shouldn't be a time in today's world where you should be hidden away and not be able to be yourself," he said. "Our organization, Monumental and the Caps being here, hopefully shows people the way and improves people's lives."
The goalie missed the parade last year because it happened shortly after the Capitals won the Stanley Cup against the Vegas Golden Knights. But this season, Washington lost to the Carolina Hurricanes in the Eastern Conference First Round.
"In a perfect world, I wouldn't be here every year," Holtby said. "But if there's a positive and a negative, this is always fun. … If you can change one or two lives, it's worth it. Hopefully, we can do that."