The bombing the church where 4 girls were killed happened in 1963, the movie takes place in 1964-1965 why do you think the scene of the bombing was included in the film

Yes, the scene in the 16th street baptist church in birmingham was included  in the selma film. the bombing took place in the year 1963, but the movie starts with king's speech on  his nobel prize acceptance in 1964. the scene from the church bombing is included in the film to set a stage of racial tension and show the unrest in the south.