The issue of freedom of expression was placed at the center of public debate by the publication of twelve cartoons of the prophet Muhammad by a Danish newspaper in 2005. It was agreed that the cartoon crisis had some connection to the issue of free speech but it was less clear exactly what the connection was. This article discusses three aspects of freedom of expression: its normative justification, its limits, and which responsibilities citizens have when exercising it. It is argued that these three aspects are intimately related, and that the relationship was ignored by Jyllands-Posten and those who supported the newspaper.