PHILADELPHIA — Moments after former officer Derek Chauvin was convicted of murder in George Floyd’s death, copies of the original Minneapolis police statement began recirculating on social media. It attributed Floyd’s death to “medical distress” and made no mention that the Black man had been pinned to the ground at the neck by Chauvin, or that he’d cried out that he couldn’t breathe. Many were posting the release to highlight the distance between the initial police narrative and the evidence that led to the conviction Tuesday, including excruciating video shot by a teenage bystander of Chauvin with his knee on Floyd’s neck, even after Floyd had stopped moving. And while Chauvin’s conviction is a high-profile case of video rebutting initial police statements, criminal justice experts and police accountability advocates say the problem of inaccurate initial reports — especially in fatal police encounters — is widespread. “If it wasn’t for this 17-year-old who took the video, Derek Chauvin would in all likelihood still be on the police force training officers,” said Andre Johnson, a University of Memphis professor of communication studies.