“They are very dangerous, but we exterminate them like rats.”
On Serb snipers in the siege of Sarajevo. http://www.bhdani.com/arhiva/259/t25905.shtml
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Jusuf Prazina 6
Bosnian mobster 1962–1993Related quotes

In Hoc Signo Vinces
1960, In Hoc Signo Vinces

“Those rats … were attacked by the masses tonight and we eliminated them.”
Radio address on rebel forces in Tripoli, as quoted in "Libya conflict: Col Gaddafi faces rebel uprising on streets of Tripoli" in The Telegraph (21 August 2011) http://www.telegraph.co.uk/news/worldnews/africaandindianocean/libya/8713761/Libya-conflict-Col-Gaddafi-faces-rebel-uprising-on-streets-of-Tripoli.html
Speeches
“Not forgiving is like drinking rat poison, and then waiting around for the rat to die.”
Traveling Mercies
Source: Traveling Mercies: Some Thoughts on Faith

A Stainless Steel Rat is Born (1985)
The Stainless Steel Rat
Context: We must be as stealthy as rats in the wainscoting of their society. It was easier in the old days, of course, and society had more rats when the rules were looser, just as old wooden buildings have more rats than concrete buildings. But there are rats in the building now as well. Now that society is all ferrocrete and stainless steel there are fewer gaps in the joints. It takes a very smart rat indeed to find these openings. Only a stainless steel rat can be at home in this environment.

“My subjects are like rats in a basket.”
Morocco poll - choice or façade?, BBC News, 1 September 2007 http://news.bbc.co.uk/2/hi/programmes/from_our_own_correspondent/6970555.stm,

“Colored people are like human weeds and are to be exterminated.”
Unknown source, attributed by Life Education and Resource Network (LEARN) http://www.blackgenocide.org/planned.html and by Roger L. Roberson, Jr, The Bible & the Black Man: Breaking the Chains of Prejudice (2007), p. 18.
Seems to take "human weeds" from "a garden of children instead of a disorderly back lot overrun with human weeds" or from "the gradual suppression, elimination and eventual extirpation of defective stocks– those human weeds which threaten the blooming of the finest flowers of American civilization" and "exterminated" from "we do not want word to go out that we want to exterminate the Negro population, and the minister is the man who can straighten out that idea" (see above).
Misattributed