"Mr. President, can you not see what this means to the people who put their lives on the line every day?" Nugent added. "It's a slap in the face, sum total or not."

One of Common's songs supports Assata Shakur, who was convicted of first-degree murder in 1977.

Nugent himself is a former police officer, and he noted that thousands of officers will hold a candlelight vigil in Washington on Friday night to honor officers killed in the line of duty.