Yeah, it really is plain English. In plain english you misrepresented and/or flat out lied that Sharpton led a rally shouting for dead cops, and proceeded to use that as justification for Sharpton "contributing" to the death of two cops.
Did Sharpton's "rhetoric" contribute to the heated atmosphere? Yes. So has the "rhetoric" of the President, of various police officers, of various TV personalities, of Fox News, of CNN, of the New York Times or the New York Post, and everyone else commenting heavily about this issue, because it's helped to cause to grow to ridiculous proportions.
But did it contribute to the murder of two police officers? No. It's ridiculous to claim that an individuals speech that in no way directly incites, calls for, or directs people to commit a crime, "contributed" to murder.
Just as I said it was ridiculous to suggest that Tea Partiers or Sarah Palin "contributed" to the the murder of the little girl and the shooting of Gabby Giffords when people erroneously threw out such accusations (doubly stupidly, since it finally came out he wasn't a tea partier). And just as it would be ridiculous to accuse those people who created the "Zeitgiest" movie for the shooting. And just like it's ridiculous to suggest the Tea Party or Bundy Supporters "Contributed" to the death of Las Vegas Police Officers wrapped in "Don't tread on me" flags. It's ridiculous to blame Sharpton for the murder in this case. IF you want to cast blame at him in part for the over all enflamed atmosphere surrounding these cases, that's reasonable. That's entirely different than suggesting he actively contributed to the MURDER.