Socialist Councilwoman Tiffany Caban’s infamously-shuttered district office is finally open for business — for visitors who want to “vent” about the New York Post.

The Defund the Police pol — who routinely frustrates constituents by shutting her Queens office weeks at a time — made the startling open-door offer to the controversial head of a parent group who is under fire for allegedly fueling anti-Israel hate.

During a Dec. 4 public hearing about online harassment targeting females and “gender-expansive people,” Tajh Sutton, president of ultra-liberal Community Education Council for District 14, claimed she’s become a victim of “doxing” and other online threats.

Sutton claimed she’s being harassed as a result of multiple reports in The Post revealing how she helped organize a massive pro-Palestinian, anti-Israel student walkout on Nov. 9 with help from groups tied to Chinese Communist Party in which some kids shouted “F–k the Jews!”

Cabán, at the hearing, then accused New York’s favorite tabloid of being a “rag” and gushed over Sutton’s testimony. She told Sutton she and her staff are always available – even if it’s just to come by the district office to “vent about the New York Post.”

Earlier, Sutton was even able to score an extra 90 seconds of testimony time after Cabán insisted she continue beyond the mandatory three-minute limit for members of the public.

“No, please! Please finish your statement! That is okay,” insisted the far lefty pol, blatantly ignoring protocol.