system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] During the reign of the Empire, I bought a lightsaber off a shady person in Nar Shadda. I get into a fight in a packed cantina and pull out my new elegant weapon. I ignite the blade and everyone comes to a halt. Oh, this moon has a ton of stormtroopers stationed. How screwed am I?

I'm no Jedi by the way. Just bought this super awesome blade off some dude. He offered me death sticks too, but no thanks I'll take the actual death stick...laser..beam, thanks. 

So now that I'm feeling badass and all, I go around cantinas and if any fella wants to mess with me, they can talk to the saber first! 

People freeze everytime I pull it out and ignite it, I think they think I'm a Jedi or something. Pfft. But, recently, stormtroopers have been radioing each other whenever I'm spotted. They never outright confront me. Am I in trouble or something? Do I leave this moon? Recently I even feel like I'm being followed...
gpt
The fact that they haven't confronted you means you might be okay.  If they actually thought you were a Jedi you would probably be dead after a group of Stormtroopers tried to arrest you and got jumpy and open fired.

They are probably watching you for one of a couple of reasons.

1.  They are still the legitimate law enforcement of the planet, and you are a jackass swinging around a sword, lightsaber or not that is dangerous.

2.  They think you might draw actual Jedi to you.  If word get around about a lightsaber wielder a Jedi in hiding might come out to see if a lost brother or sister was still alive.

3.  Worst case scenario an Inquisitor or worse yet Vader has decided they will drop by to access the situation personally and the Stormtroopers have been ordered to keep an eye on you (plus they want to see this go down).  At this point, you are 100% dead.  Vader and at least most of the Inquisitors are former Jedi and still follow the Dark Side of that overall belief system.  A lightsaber isn't a toy to wielded by an unworthy person.  If you were powerful and had connections you might be able to get away with owning a lightsaber.  But as it stands when one of the now Fallen Jedi finds you they are going to ask you where you got it, then torture you to make sure you told the truth, and then read your (which they could have done from the beginning).  After that they will probably kill you to test out the lightsaber you have.