Democrats had an online meltdown after hosts from their leftist network CNN dared question President Biden’s use of the military during his fiery primetime attack on his Republican rivals. Hosts Brianna Keilar and Jeff Zeleny were just a few of the people upset at the commander-in-chief using Marines to back him during his speech — sparking demands for their axing and an outright boycott of the left-wing network. “You are clearly a shill for the RNC,” one person whose Twitter bio includes a #BidenHarris2020 hashtag tweeted Zeleny just for saying that using the Marine Band was “a break with White...