Saturday night's UFC 290 was the source of much dispute and debate, with an unexpected celebrity interaction serving as the flashpoint.

Former President Donald Trump and celebrity chef Guy Fieri were caught exchanging pleasantries outside of the octagon. This innocuous moment quickly became a source of contention with some users on social media launching vitriolic attacks against Fieri after images of their interaction went viral.

The widely-viewed match between Conor McGregor and Dustin Poirier provided much entertainment for fans in attendance at the UFC Apex Facility in Las Vegas, Nevada. What happened afterward, however, was far from expected.