  Images are an indispensable part of the news content we consume. Highly
emotional images from sources of misinformation can greatly influence our
judgements. We present two studies on the effects of emotional facial images on
users' perception of bias in news content and the credibility of sources. In
study 1, we investigate the impact of happy and angry facial images on users'
decisions. In study 2, we focus on sources' systematic emotional treatment of
specific politicians. Our results show that depending on the political
orientation of the source, the cumulative effect of angry facial emotions
impacts users' perceived content bias and source credibility. When sources
systematically portray specific politicians as angry, users are more likely to
find those sources as less credible and their content as more biased. These
results highlight how implicit visual propositions manifested by emotions in
facial expressions might have a substantial effect on our trust of news content
and sources.
