Answer
Russian police officers were the main perpetrators in the fraudulent re-registration of Browder's companies. They falsified documents and forged signatures in order to transfer ownership of Browder's companies to the Russian government. This allowed the government to seize control of Browder's assets and to deny him access to them. The fraudulent re-registration of Browder's companies was a major setback for him and his company, Hermitage Capital Management.