That caught the attention of social media.
John Ernst says he has been jumped, followed, and targeted for harassment and crime because of his skin color.
He said the sign was meant to raise awareness about racism.
John Ernst, the homeowner said, "If this goes across the country or just in this town - we need to start being more polite, friendlier, and more caring about our neighbors and find out who they are."
Ernst, who is biracial, insists he is not racist.
The Black Lives Matter movement member says the house really isn't for sale - he just hoped to get attention.