The keyword term "patriots day how many died" functions as a noun phrase in this context, representing a specific topic or query for an article. It acts as the subject of the inquiry, effectively asking for information about the death toll associated with Patriots' Day.
The primary event associated with fatalities on Patriots' Day in recent public memory is the Boston Marathon bombing. This terrorist attack, which occurred on April 15, 2013, resulted in three immediate fatalities at the scene. These victims were Krystle Campbell, Martin Richard, and Lingzi Lu.
Furthermore, the tragic events directly linked to the bombing's aftermath include additional fatalities. MIT Police Officer Sean Collier was murdered by the perpetrators during the subsequent manhunt. Additionally, Boston Police Officer Dennis Simmonds died approximately a year later from injuries sustained during a shootout with the bombers in Watertown. Therefore, when considering all direct and proximate fatalities stemming from the 2013 Patriots' Day terrorist attack and its immediate aftermath, the count comprehensively includes the three initial bombing victims and the two law enforcement officers whose deaths were directly related to the pursuit and apprehension of the perpetrators.
