I notice it more during snowmobile season where business's have a sing on the door instructing riders to remove their helmet before entering the store.
With robberies going on all the time, especially in the cities, I can not blame them for wanting the helmets removed.
That being said, the store clerk overreacted and should be prosecuted.
Most gun owners here in America are very responsible. Millions of legal gun owners did not shoot anyone today. The media is quick to jump on gun violence as part of their agenda. You do not here about the lives saved from rape and murder by someone protecting their family, loved ones, a perfect stranger, or themselves because it does not fit their agenda.
Yet you do not see all the gun violence due to drugs/gangs reported by the main stream liberal media.