Macau police detained seven people on Monday at the site of a planned rally in support of Hong Kong’s anti-government protesters.A Hongkonger was among the six men and one woman held after dozens of people dressed in black descended on the iconic Senado Square tourist spot at around 8pm.In a rare move, police had earlier denied permission for the gathering to go ahead citing security concerns, and organisers had asked people not to attend after heavily promoting the event online.Police had…