Harvard University says it has canceled offers to admit at least 10 students after it found they exchanged offensive memes on social media. The university’s student newspaper, The Harvard Crimson, reported the move on Monday. The Crimson reported that the individuals connected through the Harvard College Class of 2021 Facebook group. It said they traded memes and messages with a private Facebook group, which was set up last December. Those memes included images making fun of sexual abuse, racial minorities and the deaths of children. For example, one student in the private group called the imagined hanging of a Mexican child “piata time,” The Crimson noted. Others made jokes about the Holocaust, Germany’s systematic killing of Jews and others during World War II. A Harvard spokeswoman did not comment, saying the university does not discuss the admission of individual students. The university tells accepted students that an offer of admission can be canceled for a number of reasons. They include behavior that brings into question student honesty, maturity or moral character.