https://www.huffingtonpost.jp/entry/story_jp_66bc4bb0e4b0768018b759b1
It was learned from an interview with those involved that the Aichi Prefectural Police had prepared a document in 2010 calling for job questions and thorough inspection of belongings with the mindset that "foreigners must have some kind of illegal acts". HuffPost Japan version has obtained the internal document.
by mls12682
