The Canadian prime minister criticized India Wednesday over its alleged interference in the "safety and sovereignty of Canada."

While Canada has been a safe haven for the Khalistan movement for a long time, such groups were revitalised under Prime Minister Justin Trudeau who has patronised them since coming to power in 2015 for political gains.

There are roughly 770,000 Sikhs in Canada, about 2 per cent of the population - the largest Sikh community outside India Ottawa's accusations this week detailing a deadly Indian campaign against its Canada-based critics may have further derailed bilateral relations - but to Sikh activists,