If it's such an insignificant movement, it's curious why India saw fit to assassinate a Canadian on Canadian soil. A claim that as near as I can tell only India and its surrogates (such as yourself, it seems) dispute.
It is a significant movement in Canada. https://en.wikipedia.org/wiki/Air_India_Flight_182
Also, the veracity of a claim does not depend on who is making it or who is disputing it. The accusing investigation agency has do a proper investigation and submit proofs and ask for extradition.
Several countries examined Canada's evidence and found it satisfactory. Your government conducted an extra judicial execution of a Canadian citizen on Canadian territory. You are the baddies, even if your government assures you of the opposite.