According to Osho, a Marwari can attain moksha, but only by dropping the identity of being a Marwari and every other label. Liberation means going beyond all boundaries of caste, creed, nation, even the adjective human. Where there is ego, there is bondage; when all adjectives fall, pure witnessing remains. Be consciousness, a witness; that state is moksha.
Yes—if you stop clinging to being a Marwari or anything else and simply stay as the quiet watcher inside.