They don't
Indonesian Muslims never ever kill Christians. It was just a political war when Christians selected to be separated from main land Indonesia for political reasons.
Because Kaba is the holiest and most sacred and honored building for Muslims.
You are referring to two different groups of people. Some Muslims hate Christians. They kill them all over the world and then celebrate it. Other Muslims would never dream of killing anyone. Those are the Muslims who say they do not hate Christians - because they don't.
Muslims are Not terrorist. go Study Islam and see for yourself
Christians mostly killed Muslims and Jews during the Crusades. The whole thing was wrong- it was a slaughter.
the Khana Kaba
maybe some extremists like wahhabi Muslims like it.
When the Christians came; they would kill the Muslims.
ISIS is a fanatic organization. It does not want to kill Christians. It wants to establish a state of its own kind of Islam. ISIS people interpret Islam in their own way. They kill even the Muslims who do not agree to their interpretations. They not only dangerous for the Christians, they are equally dangerous to the Muslims.
There are no idols in Kaaba, because Muslims don't worship idols.
The holy Kaba
christians