https://phys.org/news/2018-07-twitter-trump.html

So, does threatening nuclear annihilation upon an entire country get you the boot from the social network? Twitter's policy states that threats of violence can get you kicked off. For instance, if somebody were to tweet a threat to kill his neighbor with a sawed-off shotgun, they could easily be kicked off for violating Twitter's policies.

But not if you are Trump—or another world leader. Here's why: