And for your question on when it will stop ?

Until we people begin to respect mankind for what they are and not what religion they belong to. Until we people respect free will and toleration.

I think it is going to take some time for people of this part of the world until they begin to realise both.

(And as far generalisation of humans by nationality is concerned which i seldom do, by far South Americans are the most friendly people I've known as they are far busy enjoying daily lifes and struggles and do not spend time in religious hatreds and sectarianism.That is something valuable for others to learn)

God Bless the World !

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Think Global...Act Local !