Exactly. Those people pick and choose the bits from the bible that enforces their arguement or shows a set of morals, but they ignore/dismiss the parts that condone slavery and *struggle cuddle* for example.
Much of Christianity focuses around the New Testament (530 BC and 70 CE). The Old Testament is not ignored but is not focused nearly as much as the new.
Having said that the phrases in question you speak of can be interpreted in many ways. This is similar to the fuelling of the hatred towards the Quran.
Examples in the Quran people who oppose it say verse: 2:191 And slay them wherever ye find them, and drive them out of the places whence they drove you out, for persecution is worse than slaughter. And fight not with them at the Inviolable Place of Worship until they first attack you there, but if they attack you (there) then slay them. Such is the reward of disbelievers.
They post the above verse while ignoring the verses before and after and never post the full story or setting in which the above phrase was said.
Qur'an (2:190) Fight in the way of Allah against those who fight against you, but begin not hostilities. Lo! Allah loveth not aggressors.
Qur'an (2:192 )But if they desist, then lo! Allah is Forgiving, Merciful.
Qur'an (2:193) and fight them until persecution is no more, and religion is for Allah. BUT IF THEY DESIST, THEN LET THERE BE NO HOSTILITY EXCEPT AGAINST WRONG-DOERS.
And before anyone asks no I'm not a religous freak but someone who takes interest of peoples views on religion and how they live their life based on their views.