The organization paying tribute to Harper was founded in 1965 by Rabbi Arthur Schneier.
So I did some googling on this Rabbi and they also gave an award to South Korea because:
It seems this award for liberty and religious freedom is really because of closing down the Iranian Embassy and deporting Diplomats.
Maybe I am generalizing but so far it seems like that because of the South Korea reason
I'll do some more googling
(visit the link for the full news article)