That's a dumb racist dogwhistle, Marrakesh and Kandy are very homogenous yet quite filthy.

The common denominator is education and poverty, not skin colour or religion or whatever you imagine it to be.

Conversely New Zealand cities ime are extremely clean (kids running around barefoot?) despite having sizable minority populations.

"The common denominator is education and poverty"

Is everyone in Japan wealthy and educated?

If you’re trying to make a point against racism, don’t bring up Morocco. It’s a “no go” zone for anyone who pays attention.

Nonsense. I was there around a year ago, and while I didn't like it (locals were very pushy and scammy with tourists), there is nothing dangerous other than the classic potential theft/getting bitten by a monkey/snake stufd.