Jean Grey needed to learn that "With Great Power, comes Great Responsibility". (Spider-Man: Brand New Day)

Jean Grey does some pretty terrible things in this movie. She is very, very casual about using her mind control powers on innocent people, and she does not appear to care, at all, about their pain and suffering.

She forces an old man to get hit by a car, just to aura farm. She releases the Hulk in a public space, endangering hundreds of people and potentially ruining Bruce's life. She impersonates MJ and kisses Peter, just to mess with him. She forces an old lady janitor to drive a tank across New York city, plow through cars and crash into a heavily fortified government building, leaving her bruised, battered and bleeding by the time she's released from the mind control, etc...

It's made clear to the audience, repeatedly - Jean Grey simply does not care about the mental/bodily autonomy of other people.

And honestly, I liked that. It felt like a very realistic flaw for a troubled teen who developed mind control powers at puberty.

The only issue is that the movie doesn't take this flaw seriously. Once Peter learns that Damage Control arrested Jean's sister, he acts like all is forgiven. The idea that her actions were not permissible even under these circumstances is not considered.

And we can't even blame Jean's flippant attitude towards other people's minds on Damage Control in the first place - because when we get a wholesome flashback to her life before the events of the movie, it is of her sitting in a park, happily watching her fellow telepath sister casually use their mind control powers to play with random paserbyers like dolls.

They give her a big line in the movie - "The only hands that will wield this power are MINE! - and yet never have her stop and think about how she's been wielding that power. Or express any guilt or regret about any of the innocent people she hurt.

And this all felt like a huge missed opportunity, because this was a Spider-Man movie. And I can't remember the last time I saw a future hero who NEEDED to learn that "With Great Power, comes Great Responsibility" as much as Jean Grey does in BND.

Especially when you consider that one of the twists of the film is that Damage Control wants to replicate her power, so that they can use it irresponsibly!

I understand if they want to reserve that level of mentorship for their future Professor X. But it would been awesome - and really helped sell the intended "Big brother, Little sister" dynamic a lot better - if they'd had Peter Parker dispense that essential nugget of Spider-Man wisdom to a new young superhuman trying to find their way.