Redefined opinion could be a consequence of rediscovery, but I don't think it is the reason (or catalyst or motive or whatever) for rediscovery.
Edit: No, actually, it could be a catalyst for later rediscovery. A changed opinion/attitude can lead to a new set of values, which would potentially lead someone to rediscover themselves, someone else, somewhere else...
I think discovery/rediscovery go hand in hand. If you discovered a new culture through experiences with refugees, perhaps you have rediscovered your humanity? I don't know your text, so I have no idea... but yeah, just tweak it
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