Are there really people here suggesting that Twitter block the POTUS? Look, he's a madman, but he's also the president. It's not up to Twitter to try and alter the national dialogue.
As the president, he'll easily find other means to get his message out, just not on Twitter.
The only sort-of argument I can see here is that the modern state gives the government a monopoly on the use of force, so there is something special about the government already, and maybe Twitter should reflect that by not banning the government for acting that way. But I don't really buy that logic.
In the end, either Twitter is a place where threats of violence are allowed, or not. Letting only some people make such threats makes no sense.
There are people seriously suggesting that Donald J. Trump be held to the same standards with regard to content as other Twitter users, rather than Twitter being a biased, pro-Administration propaganda organ.
Twitter has clearly decided against that (that's been clear for some time, but now it's official.)
> Look, he's a madman, but he's also the president.
And that's why reporting about him is valuable and ought to be protected, and it certainly a reason that he has disproportionate power of government tools of communication.
It's not a reason for a private entity to grant him preferential liberties in a discussion forum that are not granted to others, particularly his domestic political opponents.
Allowing accounts of “world leaders” (so designated by Twitter) does not.
Allowing such accounts freedom from content and participation standards that are applied as a bases for restricting or banning other participants, OTOH, does.
It's always before an election.
With Twitter granting preferential status to “world leaders” not available to others including internal critics and challengers to such leaders, asymmetry no longer needs to occur as a matter of candidate recognition, because it's baked in as a matter of Twitter policy.
Even if such privileged were granted to official challengers, there would be a by-policy assymetric, because in practice political debate which affects election outcomes is continuous, not just during particular phases of the electoral cycle.