Am posting this to Common Sense Media too.

This historical retelling of a very important time in the Civil Rights movement is exceptional in every way - story, acting, pacing, etc.

There are a few portions that parents may wish to be aware of (spoiler warning, but it's historical so that's to be expected):

• Within the first few moments a group of young girls are killed in an explosion.
• The "n" word is used extensively, most often as a slur; other negative language is occasionally used.
• There are a few scenes were people are badly beaten, one during a daytime march, the others at night; one person is shot during one of the confrontations.
• During one scene MLK's wife Coretta confronts him about his infidelity and plays a recording of what is presumed to be him with another woman, with Coretta explaining that she knows what he sounds like.

This is a very important movie, for historical purposes, and is highly recommended for parents wishing to show their children what people of the time went through.