The use of crowd control weapons during protests that have unfolded nationwide after the officer-involved death of George Floyd has left scores of people with head injuries, according to a new study.Physicians for Human Rights, a Texas-based organization, in a study published on Monday, identified 115 people who were shot in the head or neck at demonstrations with “Kinetic Impact Projectiles” — like rubber bullets and bean bags — starting the day after 46-year-old Floyd died in Minneapolis.Video of the Memorial Day incident, which sees an officer kneel for several minutes on Floyd’s neck while…