4.

Twitter says Trump's threat to North Korea was 'newsworthy' and will not be taken down.

https://www.theguardian.com/technology/2017/sep/26/twitter-trump-threat-north-korea-newsworthy

The social media platform (twitter) argued that Trump’s tweet did not meet the conditions needed for removal however it had caused a storm on the social media this week.

"Just heard Foreign Minister of North Korea speak at U.N. If he echoes thoughts of Little Rocket Man, they won't be around much longer!"

4:08 AM - Sep 24, 2017

The tweet deemed as unacceptable to due to the lack of respect towards the leader of N. Korea however it was not removed nor has the other tweets produced by trump due to it not being harassing or threatening statement towards anyone.