Hmmm Boiling people alive,Beheadings,Throwing people off buildings,Burning alive......You compare ISIS to American cops??
Wheres the logic in this OP?
Perhaps a poor attempt to downplay the atrocities committed by the ISIS. If they can establish that the American Cops are as worse as the ISIS, then no one can question their support for the terrorist group. They will say: If you can support the cops without any issue, then what is the problem in someone else supporting the ISIS?
Some American cops would be worse than ISIS. They just happen to be shrewder, and more self-contained. See the start of the below story at https://bitcointalk.org/index.php?topic=1247629.0.No Justice for Jack Yantis: The "Smoking Gun" is a Bloody Bullet 
Sherlock Holmes chides the indifferently attentive Inspector Martin of the Norfolk Constabulary, in "The Adventure of the Dancing Men."
Critical evidence will sometimes evade the notice of an inattentive or inept investigator because he is not looking for it. When that evidence has been found, documented, and then ignored by the investigator, something worse than incompetence most likely malice or corruption -- is at work. This is true of what Idaho Attorney General Lawrence Wasden calls "the most critical piece of physical evidence" in the officer-inflicted homicide of Jack Yantis, a rancher from Council who was slaughtered by two Adams County sheriff's deputies last November 1.
That crucial piece of evidence was a "spent shell casing" in Yantis's rifle, along with what was described as a .20 caliber bullet found in the middle of the scene.Sherlock Holmes chides the indifferently attentive Inspector Martin of the Norfolk Constabulary, in "The Adventure of the Dancing Men."
Read what really happened at http://freedominourtime.blogspot.com/2016/08/no-justice-for-jack-yantis-smoking-gun.html.