system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] I'm a moderately powerful super villain hanging out at the same bar as the Joker. I could easily kill him before he had any chance to react. What if any consequences would I realistically face?

Say I'm a telekinetic who could rip his head off from across the room. Afterwards I would put a barrier around his body in case he was rigged to explode or release Joker gas. Would he have contingencies for this?
 
I'm not trying to make a name for myself, it's not a power grab, and I don't want to be seen as a hero. I just know he's a danger to anyone at any time and I don't think he should be allowed to exist. How would others react to this?
gpt
That's not Joker. That's your best friend, disguised as Joker and brainwashed, put there on purpose so that you'll murder him, go crazy from the guilt and embark upon a psychotic telekinetic murder spree.