  WhatsApp is a key medium for the spread of news and rumors, often shared as
images. We study a large collection of politically-oriented WhatsApp groups in
India, focusing on the period leading up to the 2019 Indian national elections.
By labeling samples of random and popular images, we find that around 13% of
shared images are known misinformation and most fall into three types of
images. Machine learning methods can be used to predict whether a viral image
is misinformation, but are brittle to shifts in content over time.
