Mark Zuckerberg kept his response to Donald Trump becoming the 47th president short and sweet - but people aren't happy.
If you missed it, Trump's inauguration went smoothly yesterday as he settled in for his second term as President.
Donald Trump is the President... again. Credit: Chip Somodevilla/Getty
He was joined by his family and supporters and immediately got to work at the desk of the Oval Office.
Also in attendance at the event were some of the richest people in the world - Elon Musk, Jeff Bezos, and Mark Zuckerberg.
Social media has taken a bit of a strange turn lately with Musk constantly finding himself in hot water and Meta's recent announcement that they are getting rid of fact-checkers.
But it wasn't this announcement that caused controversy with the Facebook founder yesterday - it was his reaction to Trump's presidency.
Zuckerberg, a man of few words, simply wrote on social media: "Optimistic and celebrating," followed by an emoji of the American flag.
The caption was joined by an image of himself and his wife Priscilla Chan in their inauguration outfits.
While his three-word post seems fairly mundane, people were quick to jump on him for it.
"Of course you are optimistic you’re a frigging billionaire," one person wrote, as a second added: "Scared and anxious."
Another person said: "I always thought you cared about people more than your money! You always showed compassion, humanity, and love for your country. I am sure you are still good people… no doubt! I am just so disappointed that love for your money comes first now!"
It's safe to say the people in the comments are concerned about the direction that Trump and his administration will go.
Also in attendance was Shou Zi Chew, the CEO of TikTok who recently thanked Trump for saving the video-sharing platform.
During the brief spell where TikTok was unavailable to millions of Americans, a message on the app said: "We are fortunate that President Trump has indicated that he will work with us on a solution to reinstate TikTok once he takes office."
Shou Zi Chew at the inauguration. Credit: Kevin Lamarque - Pool/Getty
Well, this is exactly what happened as Trump lifted the ban and promised to look into the issue.
After TikTok was restored, a message from the app said: "In agreement with our service providers, TikTok is in the process of restoring service.
"We thank President Trump for providing the necessary clarity and assurance to our service providers that they will face no penalties providing TikTok to over 170 million Americans and allowing over seven million small businesses to thrive."
The statement also praised Trump for taking a stand against censorship, adding: "It’s a strong stand for the First Amendment and against arbitrary censorship. We will work with President Trump on a long-term solution that keeps TikTok in the United States."
Though this could be a good thing, many have claimed that it's all a PR stunt by Trump to make himself look more favorable.