Book 1 But Harry, James saved Snape's life.
Movie NO. Pfft. Minor details. Clearly the ear wax joke is more important.
Book 3 Harry your father turned into an illegal animagus to help Professor Lupin out.
Movie Yeah, here's a stag. Imagine it's your father Harry.
Book 4 Harry, I am the Dark Lord and even I acknowledge that your dad was brave as fuck.
Movies What are you talking about?
Book 5 Look, he is insecure and smitten. And oh, that was a TERRIBLE thing to do James. Yeah, sure you hate what Snape called Lily later. And sure Snape retailated or whatever. But that wasn't cool James, that was stupid and unnecessary.
Movie YOU TERRIBLE BULLY, TERRORIZING ITTY LITTLE SNAPE LIKE THAT!
Book 7 Oh, look James is in hiding and being a loving father. Oh look, he is standing wandless in front of the darkest wizard in wizard history to give his family time to run. Oh look, he sacrificed himself at just twenty one in the hope of saving his family.
Movie James, James who? The guy Snape stepped over to get to his ONE TWU LUV. Oh her baby is crying in the cot there. BUT HE DOESN'T GIVES A FUCK BECAUSE DEAD BODY CRADLING. TRUE LOVE GUYS. ALWAYS. FUCKING ALWAYS. ALWAYSSSS.
This was a guide on how to push brave and flawed characters to the side and romanticize abusive relationships. And trust me I am skimming the surface here. There are so many scenes in the movie that completely trivalized James' character.