The Rebel Media has apologized over allegations that former employee Jack Posobiec engaged in plagiarism by lifting sections from the video of another political activist. On Sunday, right-wing political activist Jason Kessler tweeted his March 13 video side by side with an April 20 video The Rebel posted featuring Posobiec, prompting the company to issue an apology. “Today we learned via social media that extended passages of this video by Jack Posobiec were copied word-for-word from original work produced by Jason Kessler, which can be seen here and here,” the company said in a statement. “Although Kessler’s original work is briefly shown on-screen and is mentioned in passing, the work was not properly attributed. The Rebel would like to apologize to Mr. Kessler, and has sent him all advertising…