Why are divorced women often stigmatized and why do Muslim men hesitate to marry them, despite the Prophet (saws) marrying Zainab after her divorce from Zaid, his adopted son, as mentioned in the Quran?
Bismihi ta'ala
Unfortunately, this is among the very negative practices we have in our societies, and it definitely is dhulm to some women. We must strengthen our marriages, especially the culture of correct spouse selection, but also increasing our level of tolerance, to avoid divorce.
We must also try to educate people that there is nothing wrong with marrying a divorcee. They might have gone through a bad experience, or made wrong choices, or matured from their previous relationship.
In all, a lot needs to be done to improve our state, to adopt Islamic teachings in its best form.
And Allah knows best