Thing is I can understand when people say guns aren't the issue. This guy could have picked up a knife and tried to stab people in the store for example. The guns aren't responsible for his racist and white supremacist views.
However, guns do enable him to kill more people in the way he did as well and enable more gun crime and suicides by guns. America has too many guns and too little regulation. Not everyone needs a gun, they should be limited to people with a genuine need, like those who may encounter wild animals. There is absolutely no reason to have a gun in the city other than other people have guns.
Issue is America is so ****** up right now and is basically in a cold civil war. There is simply no meaningful dialogue happening between people with opposing views.