Trump knocks NBC, MSNBC on debate glitch: 'Truly unprofessional'

President TrumpDonald TrumpCapitol fencing starts coming down after 'Justice for J6' rally Netanyahu suggests Biden fell asleep in meeting with Israeli PM Aides try to keep Biden away from unscripted events or long interviews, book claims MORE knocked NBC and MSNBC for a microphone glitch during the first Democratic primary debate in a series of tweets late Wednesday and early Thursday.

".@NBCNews and @MSNBC should be ashamed of themselves for having such a horrible technical breakdown in the middle of the debate," he tweeted during debates. "Truly unprofessional and only worthy of a FAKE NEWS Organization, which they are!"

Trump followed that up with an edited video of the debate in which the lights are turned off, the president appears and then a slogan for Trump/Pence 2020 emerges. 

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A technical glitch in the debate broadcast  left some NBC moderators' microphones on while they were backstage.

The issue was quickly fixed, and the debate continued.