AVI ASHER-SCHAPIRO CRITICAL digital rights battles over privacy, free speech and anonymity are increasingly being fought in video games, a growing market that is becoming a "new political arena," experts and insiders said on Thursday. With the industry set to more than double annual revenues to $300 billion by 2025, questions about how video game operators, designers and governments handle sensitive issues take on added urgency, said participants at RightsCon, a virtual digital rights conference. In recent months, a Hong Kong activist staged a protest against Beijing's rule inside a popular social simulator game called Animal Crossing, and a member…