In a blistering attack, former external affairs minister and senior BJP leader Sushma Swaraj on Thursday said she is surprised to see that political killings are taking place in West Bengal under the leadership of Chief Minister Mamata Banerjee."A woman who herself has been a victim of political violence is allowing all these things to happen. I do not know why Mamata ji is allowing such things? I am surprised to see that this person will adopt the same path just to save her power. I never thought about this," she said at an event titled 'People's Tribunal on Political Violence in Bengal' at the Constitution Club of India here.Swaraj recalled an incident where she had gone to meet Banerjee at a hospital where she was recovering from a head injury. She quoted a heartwrenching incident where an 18-year-old party worker was found hanging from a tree."It was heartwrenching to hear that BJP workers are being killed (there). There was an 18-year-old boy who was hanged from a tree. On his ...