Unsurprisingly your knowledge of sociology is as limited as your knowledge of anything even vaguely academic. A typical response from an uneducated oaf ........... I don't understand it, it must be crap. Thus your inclusion of it in "Liberal left wing socialists"

If you could understand it you would find that a culture can be defined in many ways and for many groups, e.g. a nation of people or a group who meet down the pub on a Friday night.

I don't expect you to be able to understand it nor to realise there are some right wing sociologist even one who claimed that the Black American population were educationally inferior.

Needless to say when other people checked his findings he had deliberately skewed the figure to back up his assumptions.

Sort of thing you and the professor do.