It seems Conor McGregor has overstepped the mark this time after he was forced to apologise for a Nazi tweet sent to Dennis Siver.
McGregor, who will face German Silver in the UFC Fight Night Boston, tweeted a pictured of the two staring down with the words: Kiss them feet Nazi.
The offensive tweet attracted plenty of negative reaction and McGregor quickly deleted it before issuing a half-hearted apology with another tweet saying: Ich bin ein sowwy. Now about them feet...(which translates to...I'm sowwy. Now about them feet...)