Tear Jerker / The Division 2

• A simple overheard conversation between two children at the Campus about their parents. One of them blithely assures his friend that his mother will soon come home to take care of him, only to get a bleak rejoinder:
  Little girl: "I don't think anybody's Mom is coming home."
• One audio log shows that a college student named Peter suffering a Despair Event Horizon and is self-destructing on drugs while lamenting that life as they once knew it is gone, despite his friend’s efforts to snap him out of it.
  Theater Civilian: "You gotta lay off that crap, Peter. Look around you, for God’s sake!"
  Peter: "I am. And do you know what I see?"
  Theater Civilian: "What?"
  Peter: "Nothing. Endless days of nothing. It’s all gone. We think we can restore it but it’s gone. Maybe someone’s grandkids will experience something close to what we used to have, but for you and me, buddy? Fucking nothing."
• In the Quarantine Zone inside the Natural History Museum you find a Mother Superior treating a sufferer of the Green Poison. She's surprised to see you and thanks you for your help... but says that you can't do anything for them. Her dialogue and the complete lack of other people in the building implies that she's the last of her order comforting the last patient in their last days.
• Any Settlement before you get there. All three of them are barely holding on to life and covered in trash. The Theater had a raid and the Hyenas are holding the leader's daughter hostage. The Campus is being harassed by the True Sons and its leader is literally building grave-markers when you first talk to him. The Castle is crowded and overrun with disease. Or was. Before the chemical shell landed in the middle of it.
• What drove the Outcasts into killing every Dollar Flu survivors: they were quarantined and subsequently abandoned by the federal government during the outbreak against their will. One recorded video you can watch in-game sees the Outcasts quietly line up to 'punish' the architect responsible for Dark Zone's wall, one person at a time.
• The backstory of Theater Settlement's supervisor Odessa Sawyer: she was a Division agent before leg injuries she suffered in duty forced her into retirement. She returned home only to find out her husband has passed away, leaving her with no one but her daughter. Then her daughter got kidnapped by the Hyena bandits... It's sad to see a good officer returning home to find noting but discomfort and grief.
• The aftermath of the chemical-weapons attack on The Castle. Agent Kelso's report to Base says it all.
  Kelso: "Seven survivors. No. Seven."
• The Black Tusk's invasion. Not even a few minutes after you start celebrating having kicked out every enemy faction, they swarm in, take advantage of the celebrations, and take basically the entirety of D.C over within a blink of a eye. All that hard work, effectively undone, because of a army of Private Military Contractors whose goals and actual hierarchy are completely unknown.
• Remember Heather Lau, Faye Lau's sister that you saved in a sidequest in the first game? Well, Warlords of New York reveals that she died when the Rikers burned down the settlement she was staying at and slaughtered its populace. Unsurprisingly, Faye herself has become very bitter compared to how she was in the first game, and its all but stated that her resentment towards the Division for failing to save Heather was a primary motivation for her defecting to the Black Tusk.
• Season 4 of the Rogue Agent Manhunt. Your first target is a rogue agent by the callsign Viper her real name is Bridgette Douglas, and she is the daughter of Charles Douglas, the range safety officer in the White House. Sadder still is that it's not even out of spite. She joined Black Tusk before the Dollar Flu hit and was never activated as an agent being held in reserve for a speculated Third Wave. Unfortunate circumstances lead these two to being on opposing sides in the new world. She knows her dad is in the White House, and she is happy he's doing okay but won't leave her duty to Black Tusk. You eventually kill her.
• Sometimes, when wandering the streets of D.C., the agent will come across two deceased survivors seated on a bench holding hands, having decided to end it together rather than face the aftermath of the Dollar Flu.
• On 15th Street NW directly east of the White House can be found a small cafe with an ECHO inside. Behind the counter can be found the corpse of a man ... with a dog lying dead beside him.