Is OTHER wrong in the post ? POST : This is not that serious but am I the asshole for getting mad at strangers moving my bag? 

I take public transport (train) every day to and from school. If there’s space I always place my bag on the seat besides me because it was expensive and I take really good care of my things. I would move it in a heart beat up on my lap if anyone wants to sit there or is just looking at the seat. No problem. But having a huge bag on the lap for 40 minutes kinda suck when the train isn’t full anyway.

This older lady just came over, grabbed my bag and swung it into my lap. I gave her a “wtf are you doing touching my shit” look as I took it from her and I’m still annoyed af. It’s not that serious. A bunch of people do this, I myself ask politely if I can sit down when people put their bag besides them. She might as well have thrown it at me. Am I the asshole here??