Taleban suicide attack on Sufi shrine kills 30
A pair of Taleban suicide bombers struck one of Pakistan's most important Sufi Muslim shrines, killing 30 people and wounding 100 who were celebrating the anniversary of its founder's death with music, meditation and other practices...
Source: nzherald.co.nz - Islam
This is the part of religious justification by extremists that I do not understand. People are worshiping in a shrine and you feel that it is justified to kill them because you will get a greater glory in the hereafter?