While the global community acknowledges the existence of the country of Palestine, Iran should really rethink if its methods to protect Palestinians are effective at all. History will make that simple comparison.
The US voted against that, this will persuade students and other communities to pursue their efforts to establish justice worldwide.
UPDATE 1:
Also, when Iran links the hijab to governmental policies, rejecting the Hijab will be a tool for people to object to any governmental corruption (financial, etc). Rejecting Hijab is now a political statement in Iran. Iran will have to rethink its approaches in different areas.
UPDATE 2:
In the UN, Israel shredded the UN’s charter with a portable shredder. A bitter reminder of what Israel has done against Palestinians. Today Israel told Palestinians to evacuate parts of Rafah. One can only hope no shredding will follow.