Sorry Pedro, but you lose.
He is not being harrassed for parking his car.
You might want to re-read the article. The person in question is not being allowed to park his car on company property.
Do you believe the government should intervene and force a private company to ascribe to the wishes of a single individual? What's next? Forcing the Boy Scouts to accept gays? Forcing Augusta to allow women?
The right to own private property is one of the most sacrosanct of rights guaranteed by the Constitution. If that means someone not being allowed to park his car on private property because the owner of said property doesn't like it, well too bad. This person can either remove the flag or find another job.
True. He is not being harassed.