By Bill Graveland More than 50 Sikh protesters continued their demonstration Tuesday outside Calgary city hall on the second and final day of the G7 leaders’ summit. The number was down from Monday’s numbers, but dozens of blue and yellow Khalistan flags, along with two Canadian flags, were waved during the demonstration. There was drumming, chanting and a life-sized replica of Indian Prime Minister Narendra Modi in prison garb. Modi arrived late Monday to the meeting of world leaders in nearby Kananaskis, Alta. Canada was hosting leaders from the United States, France, the United Kingdom, Germany, Japan, Italy and the European Union. Leaders from several non-member countries, including Modi, were also invited. Protesters were first outraged that Prime Minister Mark Carney invited Modi to the event, but Sikhs for Justice…