if you're a leftist and you ever feel disillusioned about sectarianism on the left, go take a brief stroll on political Islam social media and see how deranged lunatic muh sunni ummah freaks pass around videos to each other of Shia who are about to die, and they analyze the words they say in that moment for proof of their degeneracy and evil and how they deserve to be killed and will burn in hell forever.
They did this repeatedly with videos during the active phase of the ongoing murderous terrorist war on Iran, in one case with an old woman who was bombed. They literally took that video and rejoiced in her murder by Israeli Zionist Jewish supremacists because of the words she said.
Now they're doing it with a video of a plane that was about to crash in Iran, posted by the Turkish Zionist NATO regime's propaganda outlet Clash Report, and then reposted by Zionist Jewish lunatic Rabbi Mizrahi, and MUH SUNNI UMMAH freaks are in the quote-tweets going "wow even Jews know that the Shia are evil sub-humans who should be genocided!!!! THIS IS SO EPIC, WE ARE SO EPIC, LET ME GO SUCK MBS, MBZS, ERDOGAN AND JOLANIS COCK SOME MORE."
That's a level of depraved degenerate lunacy that far surpasses anything you can find on the left in terms of sectarianism, and it makes sense why it exists, because it's being funded and boosted by vast networks of Saudi, UAE, Turkish, Syrian and other GCC bots and influencers, who are all getting their 7K per post to ensure that the mass murder of Iranians and Yemenis and Lebanese is normalized in the region as the height of Pure True Islamic Virtue.