http://b.hatena.ne.jp/entry/matome.naver.jp/odai/2139156030349874401
原文の問題の箇所を訳しておくよ
https://www.gov.uk/foreign-travel-advice/japan/safety-and-security
Japan is a stable democracy.
Civil disturbances and violent demonstrations are rare.
Occasionally, demonstrations of a pro-nationalist kind can involve hostility to foreign countries.
国粋主義の支持者によるようなデモは、たまに(時折)、外国への敵意を伴うことがあります。
Keep yourself informed of developments and if you become aware of any protests, leave the area immediately.