A judge just dropped the 3rd degree murder charge against Derek Chauvin. He still faces a 2nd degree murder charge and a manslaughter charge. This doesn't make sense to me. How can someone face multiple homicide charges for the same killing?
The concept is known as lesser included offense. The prosecution believed that they have a chance to prove murder, so they charged murder, but they understood that the judge and jury might not convict on murder. So they said in effect, "and if you won't find him guilty of murder, at least convict for manslaughter."