Three activists reach Beijing’s Tiananmen Square, the symbolic heart of China, despite a major security operation for the Communist Party’s annual showpiece of “Chinese-style” democracy Qi Zhiyong receives the first warnings from police in his suburb of southern Beijing each year in late February, as regular as the spring thaw, before another politically “sensitive period” in the Chinese capital. Local police and neighbourhood monitors contact dissidents and human rights activists across China in person, by…