Leading political figures praised Rob Reiner’s decades of activism after it emerged that he and his wife Michele Singer Reiner were murdered, following initial reports that their son Nick Reiner had been arrested and charged in the killings.Barack Obama, Gavin Newsom and Kamala Harris highlighted Reiner’s work on early childhood programs, Prop 10 and same-sex marriage, while colleagues recalled his role in preserving Southern California wildlands and producing landmark films.The Los Angeles Police Department says the investigation remains active, with prosecutors preparing pretrial filings, forensic testing underway and bail set at $4 million for Nick Reiner amid criticism of a social media post by Donald Trump about Reiner’s death.