They were downright on his side as a candidate: https://www.washingtonpost.com/blogs/erik-wemple/wp/2017/08/25/studies-agree-media-gorged-on-hillary-clinton-email-coverage/?utm_term=.7caa416fe4f8 The fact is, the media were brutal to Clinton. Still are. So when he started to claim the opposite, that was a kind of gaslighting.