Race
Race is one of the main motifs in the movie in relation to the issue of racism portrayed to mirror the reality of 1950s America. African Americans are judged according to their skin color by the wealthy white people, leaving them with few opportunities to progress and have better opportunities in life. Raymond is a black man who tries to live proudly, to not mind the color of the skin, not let him stop him, but even Raymond realizes that some things can't be overlooked once his daughter is brought in danger.
Frustration let out on the wife
Frank is a closeted homosexual man, who reaches a point in his life when he can no longer ignore his truth. His inner turmoil and frustration is shown in the way he starts to behave towards Cathy. He starts to undermine her in front of the guests, yells at her and even accidentally strikes her. His behavior is in contrast with the calm way he acts, after he accepts himself for who he is.
A problem
Homosexuality is portrayed as a problem, as a disorder that needs to be cured with therapy. It is shown as something to be ashamed of and hide, which is how the reality of the perception of homosexuality was at the time portrayed in the movie.
Spring bloom
The movie ends with the image of a branch in bloom, meaning that the spring is there. Spring is usually connected to a new life, to a new beginning which is what awaits Cathy after she leaves the train station unsuccessful in mending her relationship with Raymond.
