UPDATE 5-Petrol bombs and tear gas rock Hong Kong, scores arrested for defying mask ban <!-- no image --> <div>* Police and protesters exchange tear gas, bricks, petrol bombs<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=n6kITXH74Ws:7GKO3s6hHwk:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?d=yIl2AUoC8zA" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=n6kITXH74Ws:7GKO3s6hHwk:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=n6kITXH74Ws:7GKO3s6hHwk:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=n6kITXH74Ws:7GKO3s6hHwk:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=n6kITXH74Ws:7GKO3s6hHwk:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/n6kITXH74Ws" height="1" width="1" alt=""></div> Posted by Reuters