Making discrimination go away will never be accomplished through legislation. A business refusing to sell to any group would be bad for business, but it should not be illegal, nor subject that business to litigation.
Now, if people discover that business's policies and choose to take their patronage elsewhere, that would their choice.
If Starbucks refuses to sell me coffee because I carry a concealed weapon, I go elsewhere (or just don't tell them).
So it should not be illegal to refuse black passengers front seats in a bus, and force them to give them up to white passengers. Just wait until a bus company offers a different policy and then let free market handle everything...
