Near the beginning of the film is a scene where Joe Bell (Mark Wahlberg) stands in front of an assembled group of high schoolers to speak about bullying. The gruff father shares two points: Understanding begins at home and everything will be fine if you are true to yourself. The story about a dad walking cross country, from Oregon to New York, to raise anti-bullying awareness for his son, often travels with the same slightness. Reinaldo Marcus Green’s redemptive drama “Good Joe Bell,” based on a true story, is a brisk character study that succumbs to its shallow straight gaze.