Buttigieg on Trump tweets: 'I don't care'

Democratic presidential candidate Pete ButtigiegPeter (Pete) Paul ButtigiegTop adviser on Sanders: 'He's always been underestimated' Biden, Sanders lead Trump in hypothetical match-ups: poll The Hill's Morning Report - Trump hews to NRA on guns and eyes lower taxes MORE dismissed President TrumpDonald John Trump Former US ambassador: 'Denmark is not a big fan of Donald Trump and his politics' Senate Democrats push for arms control language in defense policy bill Detroit county sheriff endorses Booker for president MORE's tweets mocking him on Sunday just hours after the president again took aim at the South Bend, Ind., mayor. 

"I don't care," Buttigieg told Fox News's Chris WallaceChristopher (Chris) WallaceBret Baier calls out Trump for lashing out at Fox News polls: 'Fox has not changed' The Hill's Morning Report - Trump on defense over economic jitters Chris Wallace becomes Trump era's 'equal opportunity inquisitor' MORE at a town hall in Claremont, N.H.

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Buttigieg went on to say that Trump's Twitter account is "a great way to get the attention of the media." 

The mayor said Trump's online behavior is "grotesque," adding that "it is the nature of grotesque things that you can't look away."

His comments came after Trump took aim at Fox News for giving him airtime and compared him to a character from Mad Magazine. 

"Hard to believe that @FoxNews is wasting airtime on Mayor Pete, as Chris Wallace likes to call him," Trump tweeted.    

Trump has also taken aim at other Democratic primary candidates, particularly former Vice President Joe BidenJoe BidenTop adviser on Sanders: 'He's always been underestimated' 'The Simpsons' pokes fun at Trump's feud with 'the squad' 'Forever war' slogans short-circuit the scrutiny required of national security choices MORE, calling him "Sleepy Joe."