Angels, Do they really protect? Options

Hi all... I did not know on which forum to post this topic and i hope its not a problem putting it here...
Well I've read that everyone has 2 angels with him/her... One the guardian angel who accompanies us in all incarnations etc.. and the normal angel who is with us for this particular incarnation...
Then if any person has 2 angels with him/her and above that there are archangels/Principalities/Virtues/Powers/Dominions/Thrones/Cherubim/Seraphim who are here to protect humanity, then how come sometimes there are extreme crimes being committed to innocent people... the crime i hate most is rape... Could someone elaborate on when are the angels supposed to interfere... Rape is a case where i think even satan could come to the rescue if called upon...This statement is to show how much i condemn such a crime....
Any body can enlighten me on why such crimes get committed without the interference of those who have to protect us?

Well this question may seem silly,but i need to lean a lots on the functioning of this world...

Theres something more i would like to append to this thread. its from Yoga, Meditation and Japa Sadhana by Swami Krishnananda, The Divine Life Society.

People ask, "Does God exist?" This is a meaningless question. If the world exists, God must exist; because God is only a name that you give to the Consciousness that indwells the whole universe, just as consciousness indwells your own individual personality.
You may ask, "How do you know there is Consciousness everywhere?" I ask you, "How do you know your friend has consciousness?" You know you have consciousness, but you cannot see consciousness in your friend. But you infer from his intelligent activity that he has consciousness. Likewise, from the activity of the cosmos, we can infer the presence of a Cosmic Intelligence.
Now, this Cosmic Intelligence, immanent in all objects, is what is called God, the Supreme Being. You call it the Absolute, because it is Complete Consciousness, and there is nothing outside it. When there is something outside it, you call it relative consciousness. When there is nothing outside it, and it is All-in-All, all-pervading, you call it Absolute-Consciousness.
Now, you are a part of the Absolute-Consciousness, because you are a part of the universe. You are an organic part of the universe, not a mechanical part (like a stone in a heap). You are vitally related to the whole cosmos, so that you are an essential part of the cosmos.
From this analysis we come to the astounding conclusion that the whole universe may be compared to a vast individuality. This is what the Vedas call the Parama-Purusha or the Supreme Being. When they use such terms in the texts, what they mean is that our salvation lies in being friendly with the universe as a whole.
The health of a finger of your body depends upon the health of the whole body. Suppose the whole body is suffering from typhoid fever, can a finger be healthy? No, the finger also will be affected by the same illness,because it is vitally related to the whole body. Likewise, whatever the universe is, that you also are. The universe is a perfect balance of forces; and so, inasmuch as you are an integral part of this perfect balance of forces, which is the universe, you know how you have to conduct yourself in life. You cannot afford at any time in your life to violate the law of the universe.

Found this paragraph quite interesting to put it here...