GOMA, Democratic Republic of Congo, Jan 28 (Reuters) - Dead bodies lay in the streets, gunfire rang out and hospitals were overwhelmed in east Congo's largest city Goma where M23 rebels backed by Rwanda faced pockets of resistance on Tuesday from army and pro-government militias. A day after the rebels marched into the lakeside city, protesters in the capital attacked a U.N. compound and embassies including those of Rwanda, France and the United States, expressing anger at what they said was foreign interference.