<human>:  Where does the concept of ‘us’ and ‘them’ come from?
<bot>: The concept of “us” and “them” is a social construct. It is a way of categorizing other people. In some ways, it is similar to the way we use language to describe things. We use words like “red”, “blue”, “yellow”, “green”, “big”, “small”, “fast”, “slow”, etc. to describe things. We use these words to categorize things into groups.