Yoko Ono is all too familiar with the life-shattering effect of gun violence. Joining the multitude of celebrities pushing for stricter gun control, Ono tweeted an image of bloody glasses that appear to have belonged to her former husband, Beatles legend John Lennon, who was shot dead outside his New York City apartment. Above the grisly image of the blood-splattered specs is a stark statistic: “Over 1,057,000 people have been killed by guns in the U.S.A. since John Lennon was shot and killed on December 8, 1980.” The post is just one in a string of tweets against gun violence. It isn’t the only cause the energetic 80-year-old is focused on at the moment: just last month she launched an anti-fracking campaign against Gov. Andrew Cuomo.