Cuba’s capital remained largely paralysed on Monday, and the rest of the island braced for the fourth night of massive blackouts which generated a handful of protests and a stern government warning that any unrest would be punished. Hurricane Oscar made landfall Sunday before crossing the island’s eastern coast as a tropical storm Monday with winds and heavy rain, leaving at least six dead after a night that saw protests by several dozen people in urban neighbourhoods like Santos Suárez and central Havana. Some banged pots and pans in the streets, while others demonstrated from their balconies…