We are Uyghur and Tibetan activists. We call on the United States, Canada and like-minded countries to coordinate a global boycott of the 2022 Olympics in China. By Zumretay Arkin and Lhadon Tethong A movement calling for a boycott of the 2022 Beijing Olympics is gaining momentum. State Department officials have recently denied reports that the U.S. is coordinating with allies to boycott the event, but one thing is certain — this news will be very concerning…