  In today's digital age, characterized by rapid news consumption and
increasing vulnerability to propaganda, fostering citizens' critical thinking
is crucial for stable democracies. This paper introduces the design of
ClarifAI, a novel automated propaganda detection tool designed to nudge readers
towards more critical news consumption by activating the analytical mode of
thinking, following Kahneman's dual-system theory of cognition. Using Large
Language Models, ClarifAI detects propaganda in news articles and provides
context-rich explanations, enhancing users' understanding and critical
thinking. Our contribution is threefold: first, we propose the design of
ClarifAI; second, in an online experiment, we demonstrate that this design
effectively encourages news readers to engage in more critical reading; and
third, we emphasize the value of explanations for fostering critical thinking.
The study thus offers both a practical tool and useful design knowledge for
mitigating propaganda in digital news.
