Hong Kong police have received more than 1,200 complaints over their handling of often violent anti-government protests, according to the city’s security minister, who added no officers have been disciplined so far.John Lee Ka-chiu also told the Legislative Council there had been about 5,800 protest-related arrests since June, when the now-withdrawn extradition bill sparked months of unrest.The demonstrations intensified this month as radicals repeatedly caused carnage during working hours,…