Rafael Ramos and Wenjin Liu died because of the campaign to vilify police.
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The police have done an excellent job stepping along to the marxist beat as they conduct no knock raids , flash-bang infants , steal property with impunity and generally place themselves above anything resembling the rule of law.. only the police themselves can reverse the CORRECT interpretation of their actions by refusing to violate others rights. I don’t know those two officers but they are part of an organization that encourages theft from the public with false parking tickets , conducts deadly no-knocks , supports illegal stop and frisk operations and supports officers in motorcycle gangs dragging people out of their cars and beating them to a pulp.
Yours may be one of the most absurd posts I've seen here on years on FR. If you analyze the calls for service numbers made across this county over a 24 hour period then compare the number of events that you list you are citing statistical anomalies. If you do the math on a year of service calls, traffic stops, servicing warrants, etc. the overwhelming evidence is that people in law enforcement in America follow the rules.
The mathematics, the facts are that your assertion is pure garbage. It is the use of such garbage "facts" that lead to the murder of two guys sitting in a car NOT DOING any of the things you listed. They were having lunch from what I read. You indeed did not know the two officers nor do you have any inkling of their history in uniform or much else about them but you paint them as some kind of NAZI's as you do all "police". That's as asinine as looking at someones skin color and drawing conclusions from that.