You have touched an important issue. But on your main point I agree it is not subtle or particularly premeditated but it can continuously be used to create a platform from which to justify some sort of superiority.

The prevalence of single issues, of whatever type, are now a major and growing problem. Whatever the value, if any, of a particular social issue the complete social transformation we’re going through with increasing social diversity and complexity, it’s impossible to deal with only one issue. Previously this problematic but a fatal characteristic. Complexity now makes impossible to deal with issues except in a larger social and economic matrix. Even if you’re correct within the context of one single issue you may wrong by not taking into account a bunch of other issues. Focusing on social justice in one society doesn’t work. And a single social group’s idea of social justice within their group may great injustice an another group or culture.

And that brings us back to our evolutionary need to handle a much broader range of positions than most people can handle. Everyone needs to seriously broaden their view or the the single issues will continue to trigger escalating conflict.