These people were accepted and assimilated into the new society and culture of America and their ideals and values essentially made up the newfound American culture.
For example, Noah Cross initially comes off as a pleasant and good person, but underneath that he is a psychopath who doesn’t seem to believe that rules and laws apply to his actions.
Cross is compelled to drown Mulwray and other guiltless citizens who will not be corrupted by evil.
The yellowish shade that's casting over him exposes light; it tricks the audience into assuming that “all is visible and clear”.
It also leads the audience to believe that Jake is definitely on his way to success. Polanski uses oblique camera angles and their disruptive balance of frames and scenes near the beginning of the film when he uses different camera shots to pull back and slowly reveal new information to us.