In addition to its strong pro-equality/anti-racism messages, 42 promotes the idea that it's worth being considered an outcast to stand up for something important. Both Jackie Robinson and Branch Rickey have to face a lot of persecution, but by staying steadfast in their goal, they rise above the negativity and threats to persevere.
The Dodgers nearly come to blows with the Pirates when the Pirates' pitcher hits Robinson in the head. This happens another time as well. Robinson and one of his own teammates nearly go fist to fist as well but are stopped by their fellow players. A Florida man makes it clear that there are a group of men on their way to cause "trouble" if Robinson doesn't leave town. After his encounter with the racist Phillies manager, Robinson gets so upset that he privately breaks his bat. An opposing player spikes him in the calf at first base.
Several marital kisses -- a few more passionate than others -- and scenes of Robinson and his wife in their bedroom (sometimes she's in her chemise, but the camera shows her from the waist up) talking and sometimes embracing. The only risque scene is when a man is shown in bed with a woman (he's shirtless, and she's in a nightie) who's saying innuendo-laced things to him while he's on the phone. It's later revealed that they're having an adulterous affair.
Both the "N" word and "boy" are used several times, particularly in a game against the Phillies, in which an overtly racist team manager incessantly ridicules Robinson and calls him everything those epithets to "coon," "monkey," and many others. But the "N" word isn't used gratuitously, and its use is appropriate considering the movie's context. Usually when referring to African Americans, the word used is "Negroes" (historically accurate). Also a couple of uses of "s--t," "a--hole," "hell," "son of a bitch," "damn," "goddamn," and "ass."
Historically accurate shots of a Dodge car and a Budweiser ad and a few other fleeting ads in the baseball parks.
Drinking, Drugs & Smoking
Adults are shown drinking in a couple of scenes. Also some smoking, particularly cigars (accurate for the era).