Every person in the house seems to have a "screen." What is it for each person? Could the censorship be covering up the protagonist's screen?

I'm not sure what you mean by screen. The theme of identity and belonging is presented through the narrator who seems to have not developed a positive sense of who he is. The speaker feels not respected and valued as part of a family and community. At home, her mother doesn’t want to change the news channel and his brother is busy playing games. Police are brutalizing people of color. Therefore, he doesn’t feel a sense of identity and belonging.