It's still far from Global age huh !!!
I used to play music near Yokota US air base and have a few ex-military friends so I know the contradiction and some cultures around the USA based but I wouldn't know that this kind of problem is still existing in Japanese society that much !!!
https://headlines.yahoo.co.jp/hl?a=20190622-00010005-bfj-soci&p=1
Check this out !!!
You better brush up your language skill with the knowledge eh !!!
ciao