At this moment, only the Yanks are trying to pin this on a suicide bomber.
In answer to the question of evil; focus not on the perpetrator, but those who have given free taxi rides, free accommodation, volunteered to look for missing loved ones.
Today there will be those who, for whatever reason, will seek to capitalise on this for their own twisted agenda: ignore them. The real heroes today are the good, ordinary people of Manchester pulling together and helping those who are in need, right now. There, is good triumphing over evil.