Not to be obtuse, but what is your point? Obviously there exists some complex set of life circumstances, personal histories, elements of chance and so on that

Not to be obtuse, but what is your point? Obviously there exists some complex set of life circumstances, personal histories, elements of chance and so on that lead to there being some people who will interact in an insistent, even hostile, way with strangers on the streets. In that both I and those people form part of the same economy, inhabit the same political reality, my actions are probably implicated in some unfathomably complex way. I have "a role". To that extent: yes, it is not "that simple", in fact it's unknowably complex. But, in practical terms, what are you proposing?