Suicide bomb attack in mosque in Pakistan

On 21st, there was sucide bomb attack in mosque in Pakistan, and at least 54 people were killed and so many were injured. There was ex-Secretary of State for Home Affairs in mosque but he was safe. He was the person in charge of the police crack down on armed Islamic people. So, this terrorism was thought to be aimed him. I think we must not accept terrorism because it involves so many unrelated people no matter how bad target is. We can solve problems with not violence but brain.