One of the United States’ strongest critics of China, Republican senator Ted Cruz, has accused Hong Kong’s leader of cancelling a scheduled meeting with him out of “weakness” and “fear” of anti-government protesters.On a brief visit to Hong Kong on Saturday, Cruz said he had met “non-violent protest leaders” and impressed upon them the need to shun violence, but insisted he himself had never heard, or seen evidence, of rioting, vandalism and mob attacks over more than four months of civil…