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I take your reply to mean that you are a patient and tolerant of weeds and rats as God is of evil man. Does that mean that you would not raise a hand to protect yourself or family from a rapist, murderer or terrorist?

Of course not. Defense of innocent life (one's own or others) is pleasing to God. My beliefs may be summed up thus:

Legitimate defense
2263 The legitimate defense of persons and societies is not an exception to the prohibition against the murder of the innocent that constitutes intentional killing. "The act of self-defense can have a double effect: the preservation of one's own life; and the killing of the aggressor. . . . The one is intended, the other is not."
2264 Love toward oneself remains a fundamental principle of morality. Therefore it is legitimate to insist on respect for one's own right to life. Someone who defends his life is not guilty of murder even if he is forced to deal his aggressor a lethal blow:
If a man in self-defense uses more than necessary violence, it will be unlawful: whereas if he repels force with moderation, his defense will be lawful. . . . Nor is it necessary for salvation that a man omit the act of moderate self-defense to avoid killing the other man, since one is bound to take more care of one's own life than of another's.
2265 Legitimate defense can be not only a right but a grave duty for one who is responsible for the lives of others. The defense of the common good requires that an unjust aggressor be rendered unable to cause harm. For this reason, those who legitimately hold authority also have the right to use arms to repel aggressors against the civil community entrusted to their responsibility. [Source]

What I'm saying is that we have no right to judge which people are "wheat' and which are "tares" on this Earth. Only God can judge the hearts of men -- and He will, on the Last Day. Until then, we may judge the actions of others -- "by their fruits shall ye know them" -- but not their souls.