Sir Paul McCartney is just one of many celebrities who have wanted to help create awareness about the killings of unarmed black men in Ferguson and Staten Island, and the iconic musician recently revealed he attempted to write a song about the tragic incident.

Paul McCartney
McCartney has attempted to write a song about the Eric Garner protests

While the former Beatle spoke with The Associated Press, he did admit that his efforts to write lyrics about the killings of Michael Brown and Eric Garner haven't' gone as planned, but he still hasn't given up on creating a protest anthem.

"I was thinking recently about all these protests in New York and around the country," he said. "I thought it would be great to put something down about that, just to add my voice to the thousands of people walking in the streets. I thought it through, and it just didn't come easily."

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However, McCartney adamantly stated, "I'm not giving up on it, but it didn't come easily, whereas some other emotions might come easily to me."

Another star who has spoken out against the killings of the two black men is Hollywood actor Samuel L. Jackson. Ealier this month he called upon all celebrities to use their high-profile status to sing the 'I Can't Breathe' protest song, which was first sung after a New York City grand jury issued a verdict on Dec. 3 not to take a white police officer to trial after killing Garner, 43, who is a father of six, by putting an illegal chokehold on him while he was being arrested.

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During the incident, Garner can be heard saying "I can't breathe" multiple times.