Rebecca Rubin Film and Media ReporterGravitas Ventures, an independent film distributor, has acquired worldwide rights to Charlie Minn’s next three documentaries.Those projects — “7 Murders a Day,” “Who Shot Colosio?” and “Miracle on 4th Street” — complement Minn’s background in investigative journalism. Minn directed and produced the non-fiction films, which were shot both prior to and during the coronavirus pandemic.