The reasoning behind this is actually quite clear. The fact is that Twitter top dogs hate Trump. They hate Trump above anything and everything else. Khamenei hates Trump as well. Consequently, Twitter is fine with Khamenei, genocidal anti-Semitism and all, but censors Trump.
“Twitter defends blocking Trump tweets but not Iran’s Ayatollah Khamenei,” by Ebony Bowden, New York Post, July 29, 2020:
A Twitter spokeswoman has defended the company’s decision to block and restrict tweets from President Trump but not those of Iran’s Supreme Leader Ayatollah Ali Khamenei which call for genocide of the Israeli people.
The reason? Because the Iranian dictator’s tweets pass as “commentary on political issues of the day” while Trump’s could “inspire harm,” Twitter claims.
During a hearing on antisemitism in front of the Knesset, Israel’s parliament in Jerusalem, lawmakers grilled a Twitter representative over why the platform was policing missives from Trump, but not other world leaders such as Khamenei calling Israel “a cancerous growth.”
“You have recently started flagging the tweets of President Trump,” noted Arsen Ostrovsky, a human rights lawyer and executive director of the Jewish-Israeli Congress.
“Why have you not flagged the tweets of Iran’s Ayatollah Ali Khamenei who has literally called for the genocide of Israel and the Jewish people?” he asked.
In an astonishing response, the Twitter spokeswoman claimed that tweets from the Iranian leader — where he has publicly called for the “elimination” of Israel — amounted to little more than “foreign policy saber-rattling.”
“We have an approach to world leaders that presently say that direct interactions with fellow public figures, comments on political issues of the day, or foreign policy saber-rattling on military and economic issues are generally not in violation of our Twitter rules,” the spokeswoman responded.
Stunned lawmaker Michal Cotler-Wunsh interrupted: “So calling for genocide is OK?”
“Calling for genocide on Twitter is OK, but commenting on political situations in certain countries is not OK?” she continued….
“I’ll just cut to the chase: Big Tech is out to get conservatives,” Ohio Republican Jim Jordan said. “That’s not a suspicion, that’s not a hunch. That’s a fact.”
Yep.