That shopowner is going to get shots across his back a plenty in prison... you want the right to own guns, then weed out the fucktards who can legally buy them.
This is being treated like a murder, which is what it should be treated as. Classify it with all the 247 killed so far in Chicago alone since the start of the year.
Extreme penalties for criminal behavior rarely reduce the behavior. For example, the death penalty doesn’t deter murder either. As a matter of fact, states with the death penalty tend to have a higher murder rate. It’s the guns. Human behavior is universal.
Former Gun Company Executive Explains Roots of America’s Gun Violence Epidemic https://www.propublica.org/article/ryan-busse-explains-roots-of-us-gun-violence