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UFC loudmouth Conor McGregor has again taken a shot at one of Dagestan's most famous fighters, this time hurling an insult at top-ranked lightweight Islam Makhachev after a tense back-and-forth on social media.McGregor has drawn the ire of several fighters from the region following numerous statements made by the Irishman throughout his fractious feud with undefeated champion Khabib Nurmagomedov