Swaraj, Leader of Opposition in the Lok Sabha, had announced that Rajapakse will lay the foundation stone for a Buddhist education centre at Sanchi in Madhya Pradesh on September 21.
A strong opponent of Rajapakse in relation to killing of civilian Tamils in Sri Lanka during the armed conflict, Vaiko said it was paradoxical that he was invited for the function as Lord Buddha "not only preached peace and tolerance but also practiced it."
"Swaraj's announcement amounts to adding insult to injury to Tamils... BJP president Nitin Gadkari and leaders like Yashwant Sinha who have genuine concern for the Lankan Tamils must take steps to cancel the invitation extended to Rajapakse. If not, I will lead a black flag demonstration at Sanchi on September 21," he said in a statement here.
Vaiko said former Prime Minister and BJP veteran A B Vajpayee was compassionate towards the Lankan Tamils but Swaraj and the Madhya Pradesh government had taken a decision against Lankan Tamils' interest.
Meanwhile, DMK also expressed its opposition to the proposed visit of the Sri Lankan President to India.
"We will take part in that opposition. We are in agreement with such an opinion," DMK Chief M Karunanidhi told reporters' queries in response to the opposition to Rajapakse visit.