depends where you are coming from so what is your point of reference.
I think jessicak1234's answer here could be used as an answer for many of the questions on this forum. The degree to which someone finds Chile expensive, cheap, safe, dangerous, beautiful, ugly, corrupt, etc all depends on your frame of reference, eg where you come from and what places you have traveled/lived in. Compared to New Zealand, where I grew up, I find Chile more dangerous. If I drop my (Chilean) partner at work, I have instructions to wind up all the windows, lock the doors and not stop for ANY REASON. He works in a dodgy part of town where the trick is to walk onto the street (especially with a baby), get the car to stop, then jump it with the rest of the gang. Gunshot wounds and stabbings arrive in the ER regulary (he's a ER Doc). But compared to Bolivia, where I lived for a year, I find it safer. All relative.
As others have stated, what's common here more than assault would be theft. Houses look more like prisons, with bars on windows and metal spikes on walls. Pickpockets and bag snatchers watch for opportunities. Here in the north, cars, especially 4WD, are stolen and driven to Bolivia. But also as others have stated, this is not a giant conspiracy against gringos. Chileans will rob other chileans blind if they see an opportunity and think they can get away with it.