he wrote Seventy Two Virgins (the book having a character who loved money, had a hocked nose and jewish name) in 2004. he continuously wrote racist, sexist and homophobic comments in his articles since.

It was all out in the public domain.

It was the media's jobs to ignore this and pretend the main issue was one case where Corbyn liked a photo on facebook that he later claimed he hadn't paid enough attention to and apologised for (Johnson has never apologised or been called on to apologise)