I accidentally ran a red light.
Did it cause an accident?
Nah, there was nobody else around when I did it.
Well that's good that nobody was hurt because of it! Everyone makes mistakes from time to time while driving, but it's really dangerous to run red lights. It can cause major car accidents and even kill someone.
It was just an accident. Why do you have to make a big deal out of it.
I know that it was just an accident, and it's good that you didn't mean to do it. I'm just making a big deal of it because paying attention while driving is very important so you don't run a red light or violate other traffic laws. Just because it was an accident doesn't change how dangerous it was.