Bluesky CEO Jay Graber wore a T-shirt with the Latin phrase 'A world without Caesars' in an apparent jab at Mark Zuckerberg.
Mark Zuckerberg has often worn T-shirts with Latin or Greek phrases, including comparing himself to Julius Caesar.
Bluesky is an open-source alternative to social platforms like Facebook, Twitter, and Meta's offerings.
Bluesky saw a surge in users after significant changes to Meta's platform, and Twitter co-founder Jack Dorsey said people are running away from Twitter rather than moving to Bluesky.