I;m going to move someone's car who blocked me in on my private property.
Are you scared to move someone's car?
I'm terrified of doing something illegal
You should not move the car yourself. If they are parked illegally you can call the police and they can have the car towed.
Fuck it, I'm moving the car anyway.
You could be arrested for moving someone's care without permission. You should really consider asking them to move or calling the police instead.