China has hit back at proposed US legislation to ban the sale of tear gas and other riot control equipment to Hong Kong, accusing the Americans of “sheer hypocrisy and double standards”.In sarcastic remarks at a regular Beijing press briefing on Wednesday, Chinese foreign ministry spokeswoman Hua Chunying described US government and police handling of previous domestic demonstrations as “impressive”, with examples which included last month’s Portland protests as well as Baltimore in 2015 and…