The President of Portugal his voice to a national outcry on Monday over racist abuse aimed at Porto player Moussa Marega, who walked off the field after hearing monkey chants in Sunday's win over Guimaraes.<br /><br />President Marcelo Rebelo de Sousa condemned all forms of racism, saying: "Us, the Portuguese, we are what we are because we are the result of many cultures. there are no pure Portuguese, none." <br /><br />Marega, a striker from Mali, was visibly angered by monkey noises that were heard after he scored Porto's second goal in a 2-1 win.<br /><br />Several Porto and opposition players attempted to dissuade Marega from walking off the field in the 71st minute, when he demanded to be substituted.