Kill the mushriqeen (pagans, polytheists, kuffar) where ever you find them."
[Al-Qur'an 9:5]
Q9:5 So when the sacred months have passed away, then slay the idolaters wherever you find them, and take them captives and besiege them and lie in wait for them in every stratagem of war, but if they repent and keep up prayer and pay the poor-rate, leave their way free to them;
Q9:73 Oh Prophet! Strive against the disbelievers and the hypocrites! Be harsh with them. Their ultimate abode is hell…
Q8:12 I give firmness to the Believers: I will instil terror into the hearts of the Unbelievers: smite ye above their necks and smite all their finger-tips off them
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Killing,genocide of kafirs. Can be called a form of human sacrifice as killing kafirs seems to excite your God.