Segregation of the rich and poor…
Rose DeWitt Bukater, rich, educated and beautiful
Caledon Hockley, heir to a Pittsburg steel fortune, handsome and sophisticated.
Jack Dawson, a poor orphan who worked from job to job with no real future in sight.
This particular movie focused on the relationship of two people from two different worlds, Rose and Jack.
That movie very clearly showed us the dangers of pride, discrimination, and social cliques.