no, it is not discriminatory. You were given a choice. Take off the head rag or wear a helmet over it. You are too stupid to realize that they were giving you an option to still wear your head rag but you are spring loaded to the victim position and want to prove a point.
btw, nice last name, but you didn't have to have a name that refers to a body part to let us know you are an asshole. Your actions prove that for us.

Devils advocate here.
No shirt,, No shoes, no service.
Jackets, shirts with collars, ties required to dine here.
One must order in English to get service.
Dress code must be followed in order for kids to attend their Proms. Chaperons will be at the door to measure the length of the girls skirts and the amount of bosom showed.
No shorts or Shirts allowed in the pool.----No infants in diapers allowed in the pool.
One in the past was not allowed to fly if a woman's clothing offended others. Skirt too short, print on Shirt that offends someone.
No jewelery of religious nature allowed in school but Muslim kids can wear scarves and hats. No bandannas for non Muslim kids.
No bagged home lunches from kids that have a BLT or ham sandwitch.
All hats and guns must be checked at the door. No spurs allowed on hard wood floors. Horses must be tied up at the rail before entering.
This woman is in America, she may have even been born here, she should know that a business can dictate darn near anything if a customer arrives. Safety and health rules are more important then religious, lifestyle or tradition a customer follows.
When a business has rule's, no hats or scarves but does offer the option for their customers to wear an alternative clothing supplied by the management--then WTF.
Darn. I am retired now with time on my hands, I believe I will take my Holliday money and head up state to one of the stores that cater to Muslim woman and buy a couple of set ups, scarves and dresses.
Next year I will don this clothing and spent hours a day traveling from place to place until I find a business that I can complain about due to my dress.
Lets see, in 12 month I should be able to find 4 places to sue, their insurance will consider me a nuance suit so say $15,000 buy out from each.----$60,000 a year for my embarrassment and loss of rights for my clothing--not bad.
Signs, signs, everywhere signs --do this, do not do that, can't you read the signs????