Any Indian person who, being under the age of 21 years old, shall possess, purchase, consume, obtain, or sell any beer, wine, ale, whiskey or other alcoholic beverage or misrepresent his age for the purpose of buying or otherwise obtaining an alcoholic beverage shall be guilty of possession of an alcoholic beverage by a person under 21. Possession of an alcoholic beverage by an Indian person under 21 is a Class C offense.