It’s just a video on social media. That’s what Trump’s former special assistant said about the ex-president sharing a video that includes an image of President Joe Biden tied up on his side with a bullet hole through his head. Marc Lotter, who also served as a press secretary to Vice President Mike Pence and then became president of a communications firm, appeared on CNN to discuss Trump’s latest actions. Specifically, he was asked about the recent instance in which Trump, Lotter’s former boss, posted something that included an image of President Joe Biden bound and gagged in the back of a tru…