TRENTON, Canada Canadian Prime Minister Mark Carney welcomed his Indian counterpart to the G7 summit Tuesday, despite protests over the murder of a Canadian Sikh separatist in Canada. Narendra Modi’s invitation by Carney as chair of the G7 was protested Monday by hundreds in nearby Calgary, the city closest to the summit in the resort town of Kananaskis, but the number dropped to about 50 on Tuesday. Carney said it was ridiculous to exclude the head of a country that had one of the largest