On: In Japan, small children take the subway and run e...

[Sharlin]

I have no idea why you were downvoted. The GP is basically the dictionary definition of cum hoc ergo propter hoc.

[krapp → Sharlin]

Invoking Japanese culture as an exemplar of a successful society based on the enforcement of ethnic purity and homogeneity has become a bit of a rhetorical hobbyhorse for right and alt-right wingers, of which there are many on HN.