To mantain peace, let the CBI first arrest the Dera Chief for the murders and rapes he has committed, but it seems they are hand in glove with the Dera chief.
And when it comes to any religion be it Sikhs, Hindus or Muslims things when get out of control and are not taken care of, then people take things in there own hands and give a result the way they feel it is right.
I would say if the Dera chief comes up in the open and is sorry for his mis-deeds and then CBI goes and arrest him for the '3' criminal cases it has pending against the Dera chief things will cool down.
But it seems the Dera chief is trying to hoodwink the CBI and using the Sikhs as a shield