Case in point, if you have a rural area of 1000 people and there are 10 shootings (1% shooting rate), the likelihood that any of the 980 people not involved was near any of those shooting is very low.
On the other hand, a 4 block stretch of a city with a 1000 people with ten shootings, you can bet that all 1000 heard / saw / were affected by the shootings.
Cities need to be safer than other places in order to feel safe. And until people get this obvious fact, cities will always have this reputation.