I heard on the radio that the later verses override the former. (Abrogation).
Can anyone speak to that?
From
http://www.jihadwatch.org/islam-101.html:
The principle of abrogation... directs that verses revealed later in Muhammad's career "abrogate" -- i.e., cancel and replace -- earlier ones whose instructions they may contradict. Thus, passages revealed later in Muhammad's career, in Medina, overrule passages revealed earlier, in Mecca.
It's not just the later "scripture" but the extensive commentary that overrides the older in Islam "orthodoxy." And these more recent "inspired" works are (though not exclusively) a source of much that we would call "radical" in Radical Islam.
You've hit on something very important. When citing verses that mirror Mein Kamp those who would defend Islam in public forums will often counter with older verses, from the time before Mohammed found Jews and Christians inconvenient to his purposes, for example. Such people (who aren't completely stupid, that is) depend on a Western audience's general ignorance of this doctrine to confuse the issue.
It's not a religion, in any case. It's a garden variety mass movement as defined by Eric Hoffer.