Refusing someone to fly the American flag is a disgrace. There's no law against it... only cowardly libtards that oppress sane people. They wouldn't have the balls to ban a rainbow-tard flag for fear of legal action.
But yes, in general we don't allow illegal aliens to come here because we had border laws on Trump's watch. In general, we don't allow shoplifting and looting because we supported businesses on Trump's watch. And in general, we otherwise endorsed hard work and celebrated success because that wasn't an evil thing on Trump's watch.