It was for a seminar class on masculinity.
We read a sociologist's cultural history of manhood in America over the last two hundred years. He broadly identified three themes that popular conceptions of manhood have all shared, namely self-making (or self-control), escapism, and exclusion. Working with the last theme--exclusion as a basis for manhood--I identified historical and contemporary examples. Funny that I'm talking about the paper on Hubski: one of my contemporaneous examples of men grounding their identities by excluding others came to me based on the discussion on the site around Shane Bauer of MoJo joining a border militia.