My struggle has been long, I am a Pakistani married to African American who I helped convert to Islam. We live with parents and did everything right following the path of ahlulbayt, I get reminded that I made a mistake marrying her. How do I tackle such discrimination that we have in our communities and address it?

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If she has accepted, practicing the Islam, giving respect to your parents
And giving good tarbiyat to children
Then it is not fair to say this things. Family has to accept her and appreciate her.
I suggest you to involve elders of the family and local alim e deen to resolve this issue.