The message comes after Kadoura was criticized for spreading anti-Semitic messages and sharing a video that praises the terrorist-stamped Hamas attack on Israel on October 7.
"It has been a difficult and heavy decision, but I have landed on it being the right decision for me since my struggle for peace and a free Palestine is non-negotiable. I am leaving with pride and strength," he writes in the post.
He also criticizes the Left Party's leadership for not taking a clear enough stance against Israel's war in Gaza.
"Spineless"
"The Palestinian movement cannot accept or support a party that does not show the necessary support to stop the genocide that is currently happening in Gaza and the West Bank," Kadoura writes, describing the party's stance as spineless and completely unacceptable.
He concludes his post with the words "my voice can never be silenced."
The message from the Left Party's leadership had previously been that Kadoura could stay since he had removed the posts and been remorseful.
The Left Party's party secretary, Aron Etzler, now writes in a comment to TT that the party takes "unacceptable rhetoric very seriously, even in cases where it has been spread due to ignorance."
Etzler states that a process and talks have been ongoing with Orwa Kadoura for some time and that he has understanding and respect for Kadoura's decision to leave now.
He writes further that the Left Party stands for "Palestine's freedom, for international law, and for the equal value of all human beings."
One of several cases
The case of Orwa Kadoura is one of three where local politicians within the Left Party have been accused of anti-Semitism or supporting terrorist organizations.
Recently, local politician Ali Hadrous in Landskrona was suspended after he shared several anti-Semitic posts on social media, which Sydsvenskan/HD was able to reveal. An expulsion case is ongoing.
In the third case, the site Doku has shown that the chairman of the party in Angered, Göteborg, Kristofer Lundberg, has expressed support for the terrorist-classified Popular Front for the Liberation of Palestine (PLFP).
Party leader Nooshi Dadgostar said at the beginning of September in an interview with DN that it is important for the party to "take care of this":
Anti-Semitism and racism have no place in the Left Party or in Sweden. It is obvious that the Left Party combats anti-Semitism and racism wherever it appears.
Corrected: In an earlier version, incorrect information was provided about Ali Hadrous.