More than 100 people gathered (right) at the house of Edward Buck in West Hollywood on Monday night to demand the activist be arrested. Buck - a regular donor to Democratic campaigns including Hillary Clinton's presidential bid - was investigated for a suspected murder when Gemmel Moore (right inset), 26, was found dead of a meth overdose in July 2017. Buck (pictured right with Mrs Clinton) was again interviewed by police yesterday after another black man, in his 50s, died in his presence although the cause is not yet known. Jasmyne Cannick (left), a public affairs strategist who has worked with Gemmel Moore's family, said the DA and Sheriff's Department 'have blood on their hands' for failing to properly investigate the donor. The Moore case was closed after the Los Angeles District Attorney found insufficient evidence to prosecute. Left inset: the body of the second man is taken away yesterday.