Time and tone
This chapter definitively demonstrates that long-term coverage of Muslims was just as negative prior to September 11, 2001, as after. The tone of articles immediately following prominent terrorist attacks almost always drops measurably, but the effect is typically short-lived. Terrorist attacks such as 9/11 generate spikes in the amount of articles mentioning Muslims or Islam, as well as shifts in the prevalence of different topics. The raw number of Muslim articles jumped dramatically in the wake of 9/11 and has not receded to pre-9/11 levels. There has also been much greater coverage of terrorism and extremism than before. Corresponding positive events, such as a major speech by President Obama or the celebration associated with the annual Islamic holy month of Ramadan, do not have as much of an influence on either the amount or the tone of coverage.