Street parties invade Rio ahead of carnival One week ahead of Rio de Janeiro's official carnival, the "blocos," street parties that can draw tens of thousands of costumed revellers, have already invaded the city Saturday. In total, some one million people are expected to participate in the 115 blocos taking place this weekend in the "marvellous city." IMAGES AND SOUNDBITES//REFILING WITH CORRECT NUMBER VID995415_EN, STED VID955415_EN//