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You can practice Jainism. There’s no discrimination on the grounds of being western or race, etc.
I do not believe that any western Jain has been belittled. But yes, the current modern culture (Prevalent in the first world) has been shown to be inferior. But if one looks at it, the current modern western culture is questionable at best. Even the traditional Christian values are on the brink of going extinct.
I believe that westerners can not only practice the spiritual but also the ritualistic aspects of Jainism. The only issue, if at all would be concerning the food.