His past actions as a brainwashed assassin and his framed involvement in a terrorist bombing serve as the primary catalyst that splits the Avengers into two opposing factions.The Catalyst of the ConflictThe film's central conflict ignites when a bombing at the United Nations General Assembly in Vienna kills King T'Chaka of Wakanda. Bucky is framed for the attack by the film's true villain, Helmut Zemo. This triggers a global manhunt for Bucky, drawing out different responses from the Avengers:Steve Rogers (Captain America): Believing in his old friend's innate goodness, Steve sets out to find Bucky first to protect him from a "shoot-to-kill" order.Tony Stark (Iron Man): Operating under the newly signed Sokovia Accords, Tony is tasked with bringing Bucky and a rogue Captain America to justice.T'Challa (Black Panther): Driven by grief and vengeance, T'Challa seeks to kill Bucky to avenge his father's death.The Winter Soldier TriggerAfter Steve tracks Bucky down in Bucharest, they are captured and brought to a counter-terrorism facility in Berlin. There, Zemo poses as a psychiatrist and recites the Winter Soldier activation code words (Longing, Rusted, Seventeen, Daybreak, Furnace, Nine, Benign, Homecoming, One, Freight Car). This reactivates Bucky's brainwashing, causing him to go on a violent rampage through the facility before Steve manages to subdue him and break the mind control and instead of it being bucky barnes…this is YOU and the setting start where you are in Wakanda facility because everyone in Wakanda, including the king, think you committed the attacks and now you’re sitting in a glass box with your hands and feet are tied to the chair side and all of it was meals that you couldn’t break out of it even if you try because of the strongest metal in the world*