Viewers were left upset and fuming after watching Reggie Yates' investigation into gun crime in Chicago.
Many were horrified to hear that the murder rate in the Windy City is soaring, with a large percentage of the victims being young African-American men.
But it was the scenes and tales of police brutality that really riled people.
Many said they were "repulsed" or "disgusted" after seeing and hearing about police violence.
Watching Reggie Yates life and death it's crazy what the police did to a women! Spraying her and throwing her on the floor for nothing!
-- LE (@Lauraa__Ellis) October 10, 2016
What an eye opening and shocking truth that's happening every day in Chicago #reggieyates I can't believe what I'm watching so so sad
-- stig (@bridgetodrisco2) October 10, 2016
-- Stefan Gumbs (@stefangumbs) October 10, 2016
We're watching #ReggieYates in Chicago in openmouthed anger here
What would YOU do if police officers attacked you infront of your kids?
-- Vix (@lillai23) October 10, 2016
-- Poo (@poonamsharma00) October 10, 2016
-- Kasilas (@kasilas) October 10, 2016
Watching this Reggie Yates documentary on police brutality and im So angry I'm crying why is it like this i hate it
-- Halloweevie? (@justevienow) October 10, 2016
Reggie Yates: Life and Death in Chicago is making me sick to my stomach? these police officers are like animals
-- aimée hutton (@ahluhhuhh) October 10, 2016
There wasn't a bad review of the documentary to be seen on Twitter.
And Reggie himself won plenty of praise.
Reggie Yates documentaries are so underrated, he always manages to get an amazing insight into everything. love his programmes man
-- jessica (@jessicaperrin_) October 10, 2016
this Reggie Yates documentary is just eye opening
-- LucySeal (@lucyisaseal) October 10, 2016
@Reggie_Yates I'm 44 and was predisposed to write off your tv stuff as dumbed down for young audience. Happy to be wrong. Proper journalism
-- iamthelaw (@QuerywhoIam) October 10, 2016
-- Tim (@tuatiara) October 10, 2016
Most viewers seemed to conclude that gun culture was ruining America, and many Twitter users added the hashtag #putthegunsdown.
-- Sandy Lobban (@sandylobban) October 10, 2016