I cannot help but laugh at this post when OP only recently has made it clear that they think it would have been better had Arya just stood aside and let Joffrey physically harm Mycah.
There is no doubt that Arya comes from a privileged background. It is also true that had everything not gone to shit, she would have never known the hardships a common man truly has to face. But to diminish Arya's virtue of looking above class, above a person's station to something as just "having fun" is so mournfully wrong. It almost sounds as if Arya has just been playing at a facade of caring about the people of Winterfell. As if she derives some sort of sick pleasure from her place of privilege by playing at being a common girl.
It is in Arya's nature to make friends wherever she goes. It is in Arya's nature to want to know a person for who they are. She throws snowballs at hedge knights and soldiers bc she is a kid and that's what kids do. She names the babies of the kitchen maids bc she cares for them. She chooses the company of a butcher's boy because she enjoys spending time with him. She stands up for Mycah because that's what friends do. She is shocked at the inaction of her father's men over Mycah's death bc even though she is somewhat aware of her social standing, she is yet to fully understand the cruelty of a classist society. The colors of black and white blur a little bit here and is completely erased by the time she is on the road and sees just how much destruction the people of her class can bring upon the lives of the small folks (just like op has said).
I don't think I would have loved Arya as much as I do had she not come in between the crown prince and her friend. I would have not cared of her as much as I do had she not from the very beginning rebelled against the status quo in her own way. Westeros is in dire need of a re-evaluation of the power that has been given to the so called nobles who are not so noble in their treatment of the weak. So when a little girl comes between a butcher boy and the crown prince, the merit of the action shouldn't even be up for a discourse. After all Arya's birth would have provided her no protection had it been Jaime who had found her that day in the woods. Her birth then would have been nothing compared to Joffrey's supposed status as the crown prince.
Arya's refusal to back down in the face of injustice is not the cause of Mycah's demise. The murder lies at door of the classist society which lets the authorities get away with their crimes.



















