The Internet entrepreneur Kim Dotcom claimed on Tuesday that he has firsthand knowledge that murdered Democratic National Committee (DNC) staffer Seth Rich was involved in the leak of emails. Dotcom, whose birth name is Kim Schmitz, posted a statement to his website claiming, “I know that Setch [sic] Rich was involved in the DNC leak.” He went on to write that in 2014, a person using the pseudonym “Panda” contacted him about starting a U.S. branch of the Internet Party. “I now know that Panda was Seth Rich,” Dotcom wrote. Rich’s family has maintained that there is no proof connecting...