The conversation between human and AI assistant.
Why did Darth Vader step on Obi-Wan's robes after killing him?
That makes sense. I've also heard some fans speculate that it was a symbolic gesture, representing the crushing of the light side of the Force.
Yes, that's another interesting theory. It's possible that Darth Vader saw Obi-Wan as a representation of everything he had rejected when he embraced the Dark Side, so stepping on his robes could have been a way to demonstrate his complete rejection of Obi-Wan's ideals as well as his power.