Amnesty International Hong Kong on Tuesday slammed what it termed excessive use of force by the Hong Kong police during anti-government protests over the past six months as the cause of the city's unrest.Violence by police "is also Amnesty's focus and we consider this to be the root cause of all the violence in Hong Kong," said the organization's Hong Kong office director, Tam Man-kei, at a presentation in Tokyo.Mass protests began in Hong Kong in June over a contentious bill that sought to allow extraditions to mainland China. Even though the bill was withdrawn amid strong popular oppositi…READ FULL ARTICLE