These traits address notions of social barriers like the building of border walls, issues of race, land use, and other societal structures of exclusion. (whitewall.art)
This reflects the increasing approvals mixed dating get, the changes in attitudes towards couples of mixed races and the declining social barriers between different racial groups. (InterracialMatch.com)
Yes, poverty and other social barriers make teaching more difficult, but teachers care about their students and want them all to succeed. (e4e.org)