Question: How many days did the riot on which Detroit was based lasted? 

Context paragraphs:
2008 riot in Mongolia: On 1 July 2008 a riot broke out in the Mongolian capital of Ulaanbaatar.  The riot was sparked by allegations of fraud surrounding the 2008 legislative election which occurred three days earlier.  While initially a peaceful protest, the riot resulted in Mongolia's first state of emergency which lasted four days, and a military presence (lasting two of those days) was brought into the city to quell the riot.  Five people were killed, and the headquarters of the Mongolian People's Revolutionary Party (whom had won the election) was set on fire.  Additional suggested causes for the riot include a change to the electoral system which was not well understood, and an increased division between Mongolia's rich and poor population.

Rangala: Rangala is situated in knuckles forest reservation near kotta ganga.  Journey is starting with scenic tea plantations and ended on a hillside plateau.  It is one of the most favorite destinations of Sri Lankan and foreign hikers.  Hilltop is compatible for camping.  Beyond forest is make a place for many days of wild trekking.  But it's enough one or two days to reach to the first hilltop.  If you are a nature lover or a hiker, few words are enough to describe the place, "It is a heaven"

Kano riot of 1953: The Kano riot of 1953 refers to the riot, which broke out in the ancient city of Kano, located in Northern Nigeria, in May 1953.  The nature of the riot were clashes between Northerners who were opposed to Nigeria's Independence and Southerners made up of mainly the Yorubas and the Igbos who supported immediate independence for Nigeria.  The riot that lasted for four days claimed many lives of the Southerners and Northerners and many others were wounded.

1970 Memorial Park riot: The 1970 Memorial Park riot was a civil disturbance by alienated white youths that began in Royal Oak, Michigan, on August 24, 1970, and spread to Birmingham, Michigan, both primarily white middle class suburbs of Detroit.  The initial conflict resulted from the closure by police of Memorial Park in Royal Oak.  Authorities said that the park was being used as a marketplace for the sale of illegal drugs.  The riot lasted for three days, and led to the formation of several youth controlled social service organizations.

Detroit (film): Detroit is a 2017 American period crime drama film directed by Kathryn Bigelow and written by Mark Boal.  Based on the Algiers Motel incident during Detroit's 1967 12th Street Riot, the film's release commemorated the 50th anniversary of the event.  The film stars John Boyega, Will Poulter, Algee Smith, Jason Mitchell, John Krasinski and Anthony Mackie.

1967 Detroit riot: The 1967 Detroit riot, also known as the 12th Street riot or the 1967 Detroit rebellion, was one of 159 race riots that swept cities in the United States during the "Long Hot Summer of 1967".  This riot was a violent public disorder that turned into a civil disturbance in Detroit, Michigan.  It began in the early morning hours of Sunday July 23, 1967.  The precipitating event was a police raid of an unlicensed, after-hours bar then known as a "blind pig," just north of the corner of 12th Street (today Rosa Parks Boulevard) and Virginia Park Avenue, on the city's Near West Side.  Police confrontations with patrons and observers on the street evolved into one of the deadliest and most destructive riots in the history of the United States, lasting five days and surpassing the violence and property destruction of Detroit's 1943 race riot just 24 years earlier.

Industrial Airplane Show: The First Industrial Aeroplane Show, an industrial show, of exhibited full-size airplanes, opened on New Year's Eve 1910 as part of the 11th U.S. International Auto Show at the Grand Central Palace in New York City.  The aviation show was organised by the Aero Club of New York.  There was much media attention, and local newspapers such as the "New York Times" and "The Brooklyn Daily Eagle" covered it for many days.  The "New York Times" reported on January 2, 1911 that "All Palace attendance records were smashed Saturday when over 15,000 persons passed through the doors."  "The Brooklyn Daily Eagle" reported that many spectators bypassed the cars to look at the airplanes.  Major General :Frederick Dent Grant, USA Department Commander of the East, was one of the main speakers.  General Grant attended with three of his aides—Colonel Stephen Mills, General Staff; Captain C.W. Fenton, Second Cavalry; and Marion W. Howze, First Field Artillery.  The speakers discussed at the airplane show the possible use of planes for wars, and that the U.S. government should provide funding for airplane research and development.  It may have been the first public speech by the military regarding the use of early :military aircraft.

Mardi Gras in New Orleans: The holiday of Mardi Gras is celebrated in Southern Louisiana, including the city of New Orleans.  Celebrations are concentrated for about two weeks before and through Shrove Tuesday, the day before Ash Wednesday (the start of lent in the Catholic tradition).  Usually there is one major parade each day (weather permitting); many days have several large parades.  The largest and most elaborate parades take place the last five days of the Mardi Gras season.  In the final week, many events occur throughout New Orleans and surrounding communities, including parades and balls (some of them masquerade balls).

Penfluridol: Penfluridol (Semap, Micefal, Longoperidol) is a highly potent, first generation diphenylbutylpiperidine antipsychotic.  It was discovered at Janssen Pharmaceutica in 1968.  Related to other diphenylbutylpiperidine antipsychotics, pimozide and fluspirilene, penfluridol has an extremely long elimination half-life and its effects last for many days after single oral dose.  Its antipsychotic potency, in terms of dose needed to produce comparable effects, is similar to both haloperidol and pimozide.  It is only slightly sedative, but often causes extrapyramidal side-effects, such as akathisia, dyskinesiae and pseudo-Parkinsonism.  Penfluridol is indicated for antipsychotic treatment of chronic schizophrenia and similar psychotic disorders, it is, however, like most typical antipsychotics, being increasingly replaced by the atypical antipsychotics.  Due to its extremely long-lasting effects, it is often prescribed to be taken orally as tablets only once a week (q 7 days).  The once-weekly dose is usually 10–60 mg.  A 2006 systematic review examined the use of penfluridol for people with schizophrenia:

Mahendra Nath Deka Phukan: Mahendranath Dekaphukan (1903–1974) or Monai Boiragi in full Mahendra Nath Moi Heng Dang Deka Phukan was an artist, poet, journalist and craftsman of Assam.  He was the elder son of Lakshminath Phukan of Guwahati.  After schooling from Cotton Collegiate High School, he took adminission at Cotton College.  He left from home in mid of study and wandered many places.  He was assistant editor of "Rangoon Mail", published from Rangoon.  He came to attach "The London Art Co.", when he was in Myanmar, and made some experimental films, but he couldn't store for future.  After that he joined "Assam Bengal Press" of Kolkata as manager.  He was never staying many days one place.  After few years working he came to Assam and married a Christian woman Miss Claris, he named her Jyotirmoi Devi.  His attire was like a general village folk of Assam.

Supporting paragraphs: Detroit (film) 1967 Detroit riot
Answer: five days