[clairity]

for one, editorializing by using an emotionally-charged term like "massively", which indicates bias, and incidentally lowers trust.

in any case, it's not ethnic diversity that impacts social trust but (sub-)cultural friction, which can happen between subsets ('tribes") of the same ethnicity (which is mostly a superfluous distinction anyway). tabs vs spaces, for instance.

we like to imagine mountains out of molehills and then point to our mounded constructions to prove how we're so irreconcileably different, but it's often a thin veil over an insecure assertion of authority and superiority.