Captain America: Civil War
In a flashback from 1991, James "Bucky" Barnes/Winter Soldier, a brainwashed soldier with the same strength and power as Captain America, is ordered by the evil organization Hydra to crash a moving car and steal a case that has super-soldier serum. In Lagos, Nigeria in the present, Steve Rogers/Captain America, Natasha Romanoff/Black Widow, Sam Wilson/Falcon, and Wanda Maximoff are on a mission to stop ex-Hydra agent Brock Rumlow/Crossbones from releasing a deadly bioweapon from a lab. After a fight, Crossbones almost kills Captain America by blowing himself up, but Wanda uses her powers to lift Crossbones and let him explode in the air. The explosion kills Crossbones but also destroys a nearby building, killing a few Wakandan charity workers. Wanda is blamed for the accident, making her feel guilty.