Every religion has its extremists.
Right.
Christian extremeists shoot at abortion doctors once a decade......because they believe those doctors are guilty of thousands of murders.
Muslim extremeists murder young girls for engaging in the most innocent of past-times, or for being in love, or for some minor sexual offense.....or for being the victim of rape.......to the tune of thousands a year.
BTW, Islam provides for no punishment for the perpetrators of honour killings.
Here, educate yourself:
Gendercide Watch: "Honour" Killings and Blood Feuds