The document discusses violence and terrorist attacks that occurred in Colombia between 1886 and 2006, including assassinations, bombings, and increases in homicide rates. Key events mentioned include the assassination of presidential candidate Luis Carlos Galan by Pablo Escobar in the 1980s, car bombings that killed politicians in the 1990s, a 16% increase in violence and over 9,000 deaths in Colombia in 1990, and various bombings attributed to guerrilla groups like FARC in the early 2000s. The document provides a broad overview of the political violence and terrorist activities that have impacted Colombia over the past century.