<p>John Lennon's widow Yoko Ono on Tuesday marked the 40th anniversary of the legendary musician's shock murder with a call for gun control.</p>.<p>"The death of a loved one is a hollowing experience," tweeted the 87-year-old artist, who still lives in the Dakota building in Manhattan outside of which her husband was shot four decades ago.</p>.<p>"After 40 years, Sean, Julian and I still miss him. 'Imagine all the people living life in peace,'" she wrote, quoting the 1971 song she co-wrote with Lennon that became the best-selling single of his solo career.</p>.<p>Ono, who witnessed her husband's murder at close range, also tweeted an image of the former Beatle's shattered and bloodied spectacles, which included the words: "Over 1,436,000 people have been killed by guns in the U.S.A. since John Lennon was shot and killed on December 8, 1980."</p>.<p>At 40 years old, Lennon had returned to songwriting shortly before his death, having taken a five-year hiatus to raise his young son Sean.</p>.<p>The couple was returning home to New York's famous Dakota building across from Central Park, when disgruntled Beatles fan Mark David Chapman shot Lennon dead.</p>.<p>"Tell me it isn't true!" Ono cried in horror.</p>.<p>After Lennon's murder, Ono committed to preserve his memory, funding the construction of the Strawberry Fields memorial in New York that's become a point of pilgrimage for fans and mourners across the globe.</p>.<p>By mid-morning Tuesday, a shrine featuring flowers, photos and a small holiday tree had already cropped up on the "Imagine" mosaic that anchors the memorial in Central Park.</p>.<p>In her tweet commemorating Lennon's death, Ono included a number of hashtags including #guncontrol now and #end gun violence.</p>.<p>She also hashtagged the National Rifle Association, the powerful US organization that has for decades battled to loosen and eliminate firearms control legislation.</p>.<p>Lennon's eldest son Julian, 57, paid homage to his father, tweeting a photo with the message "As Time Goes By...."</p>
<p>John Lennon's widow Yoko Ono on Tuesday marked the 40th anniversary of the legendary musician's shock murder with a call for gun control.</p>.<p>"The death of a loved one is a hollowing experience," tweeted the 87-year-old artist, who still lives in the Dakota building in Manhattan outside of which her husband was shot four decades ago.</p>.<p>"After 40 years, Sean, Julian and I still miss him. 'Imagine all the people living life in peace,'" she wrote, quoting the 1971 song she co-wrote with Lennon that became the best-selling single of his solo career.</p>.<p>Ono, who witnessed her husband's murder at close range, also tweeted an image of the former Beatle's shattered and bloodied spectacles, which included the words: "Over 1,436,000 people have been killed by guns in the U.S.A. since John Lennon was shot and killed on December 8, 1980."</p>.<p>At 40 years old, Lennon had returned to songwriting shortly before his death, having taken a five-year hiatus to raise his young son Sean.</p>.<p>The couple was returning home to New York's famous Dakota building across from Central Park, when disgruntled Beatles fan Mark David Chapman shot Lennon dead.</p>.<p>"Tell me it isn't true!" Ono cried in horror.</p>.<p>After Lennon's murder, Ono committed to preserve his memory, funding the construction of the Strawberry Fields memorial in New York that's become a point of pilgrimage for fans and mourners across the globe.</p>.<p>By mid-morning Tuesday, a shrine featuring flowers, photos and a small holiday tree had already cropped up on the "Imagine" mosaic that anchors the memorial in Central Park.</p>.<p>In her tweet commemorating Lennon's death, Ono included a number of hashtags including #guncontrol now and #end gun violence.</p>.<p>She also hashtagged the National Rifle Association, the powerful US organization that has for decades battled to loosen and eliminate firearms control legislation.</p>.<p>Lennon's eldest son Julian, 57, paid homage to his father, tweeting a photo with the message "As Time Goes By...."</p>