People who know they’re being watched change their behaviour. In a world awash in surveillance devices, hoodies are an element of fashion driven by an architectural condition. They are a response to the constant presence of cameras overhead. People who don’t want to be watched wear them. People who want to be the kind of people who don’t want to be watched wear them. People who want to look like the kind of people who don’t want to be watched wear them.
I think baseball caps do a similar thing, but they were in vogue even back when I was in high school in the ’80s, before surveillance culture. My sense is hoodies are more about slumming (as noted here) and white male fashion anxiety.
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