Conservatives will no doubt point to this and see a diminution of their rights. What’s the difference between refusing to sell software to a gun retailer, for example, and refusing to sell wedding cake to a same-sex couple, they will ask. The answer is that gun owners are not a protected class. Employers can’t discriminate based on race, color, national origin, religion, sex, age or disability. Someone refuses to wear a shirt and shoes into your store? You can refuse them service. So it is with guns.