There's zero correlation between the expiration of the AWB and LEO's getting shot.
HOWEVER, take a look at the rise in the number of gang-banging ILLEGALS invading the USA and LEO's getting shot and THEN you'll have something Bunky. Those maggots have no respect for law and order or the value of human life. They'll cap a cop in a heart beat so they don't get deported.
From what I see down the road in Philadelphia, to say nothing of certain towns in South Florida, its no so much a case of the illegals committing crimes (although this is a factor), but of the “second baby boom” (aka the “crack baby boom”) who were born in the mid-late 80s/early 90s hitting the streets, to say nothing of the large number of folks who were locked up during the 1990s being paroled.