Street cleaner Tsui finished work at 5.30pm last Sunday, grabbed a quick dinner and headed for Wan Chai MTR station to go home, only to find the station closed because of anti-government protests.The 60-year-old, who asked to be identified only by his surname, decided to walk two stations to Tin Hau. He avoided Causeway Bay, having heard there were clashes between police and protesters there, after thousands marched to the United States consulate to appeal for American support.The detour did…