<div>UPDATE 6-"Sea of black" Hong Kong protesters demand leader step down</div> <!-- no image --> <div>* Beijing backs embattled Hong Kong leader (Adds details, quotes throughout)<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=lN9Yz3l-t00:Eo7m5RwORsk: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=lN9Yz3l-t00:Eo7m5RwORsk:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=lN9Yz3l-t00:Eo7m5RwORsk:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=lN9Yz3l-t00:Eo7m5RwORsk:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=lN9Yz3l-t00:Eo7m5RwORsk:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/lN9Yz3l-t00" height="1" width="1" alt=""></div> Posted by Reuters