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"Bydlo" is a universal term, and everyone understands it differently. For example, a street thug considers anyone who doesn't physically attack someone they disagree with to be "bydlo." He thinks that these weaklings are incapable of facing the harsh realities of the world, and he considers himself superior.
Some "nonconformist" (read: "loser") considers all workers, businessmen, and ordinary people, including street thugs, to be "bydlo," believing they are an unremarkable, gray mass that doesn't want anything or strive for anything. He sees himself as a good person, outside the system, drinking beer in the park and not working, and that's romantic.
An "ordinary person" (hopefully you understand what I mean) considers street thugs, nonconformists, and nerds to be "bydlo." He thinks that these idiots are worthless, haven't achieved anything, are brainless jerks, and it's unclear why they haven't been sent to concentration camps yet. But he, on the other hand, is a good person, wearing a nice suit, going to the movies with a girl, self-sufficient, independent, free, and not doing harm to anyone.