Just because - some Indian supports the Sri Lankan government- does not mean that the whole of India should pay for the action of a few Indians supporting the SL government. (There are also Indians who supports the Eelam Tamils).
This is the same logic as these "Ramchandran parakunnath " and " rash group" who is saying the Eelam Tamils should be wiped out because of one person - Rajiv.