Retired boxer Floyd Mayweather may have taken his gloves off for good professionally, but that hasn’t stopped him from taking a swing at former opponent Conor McGregor.

Following the MMA fan favorite’s stunning second-round loss to Dustin Poirier in their UFC Fight Island in Abu Dhabi over the weekend, Mayweather took to social to explain why he thinks McGregor’s widespread support is fueled by double-standards and racism.

Mayweather has been loved and criticized for his lavish lifestyle, flaunting of money, and untouchable demeanor both in and out of the ring. It’s the very persona that he claims his white counterpart benefits from without the hate.

“Con Artist McLoser can steal everything from me and be loved but I’m hated. That just lets you all know that racism still exist. Just know, that bum will never be me or be on my level,” wrote Mayweather on an IG post.

“I’m just built different, my mindset is on another planet, my skills are second to none, I’m a natural born winner and yes I talk a lot of trash, but every time I back it up!” he continued. “This is what they hate. It’s sad that you can be a poor black kid from the ghetto that has dealt with racism your whole life and work extremely hard to put yourself and your family in a better position, and most of the hate come from my own people.”

Mayweather hung up his boxing gloves in 2015 only to come back in June 2017 to take on McGregor. Proving he still had more than enough fight left in him, Mayweather dominated the match en route to a 10th-round TKO.

Since then he’s laid low when not being called out by internet foe 50 Cent. The now 43-year-old has also earned a new title: grandfather.

In early January Mayweather’s daughter Yaya welcomed her first child, a son, with rapper NBA Youngboy.