Expands the definition of the offense of murder in the first degree to include murder occurring after an attempt to commit certain sexual offenses

S 2645 expands New York's first-degree murder definition to include killings of emergency responders (like firefighters, EMTs, paramedics, or nurses) during their official duties, provided the defendant knew the victim was in that role. This new provision (subdivision 1-a, paragraph (a)(ii-a)) directly affects individuals who commit such killings, elevating the charge from second-degree murder. The key mechanism requires the defendant to have known the victim was performing emergency services at the time of the killing. The bill does not change existing murder definitions related to sexual offenses, which were already covered under prior provisions (subdivision 1(a)(vii)).