(2nd LD) Busan film festival opens, seeking unity after years of political turmoil
(ATTN: RECASTS video message from Busan mayor in 5th para; ADDS YouTube videos) By Shim Sun-ah BUSAN, Oct. 4 (Yonhap) -- The Busan International Film Festival (BIFF) kicked off its 23rd edition in the southern South Korean city of Busan on Thursday,