Four siblings have sued the Michael Jackson estate, alleging that they were each sexually trafficked and abused by the singer over periods that collectively spanned more than a decade. The plaintiffs—Frank, Dominic, Marie-Nicole, and Aldo Cascio—recently appeared in court in an effort to void a prior settlement that they said was designed to “silence victims of childhood sexual abuse.” A ruling on that is set for March 5. The new lawsuit, filed on February 27 in Los Angeles, arrives a month after the siblings’ last appearance in court. The Cascio siblings’ father reportedly met Jackson while working at a luxury hotel he often stayed at. According to the complaint, Jackson began sexually abusing each sibling when they were around seven or eight.…