So we all know that in the end of
Mockingjay, Katniss doesn't shoot President Snow, her torturer, to death. Instead she shoots President Alma Coin, the president of District 13, putting us all into confusion. We are confused, because Katniss didn't even aim her arrow at President Snow.
Let's start with the beginning. It all started from Rue's death. Katniss and Rue were both in the 74th annual Hunger Games, along with Peeta Mellark, who came from District 12 with Katniss. Rue is from District 11. When Marvel, the boy tribute from District 1 shot Rue in her stomach, he ended up killing her. Katniss came in just in time to prevent Marvel from hurting Rue even more. She shoots his neck down and kills him. Katniss then sings Rue to death. But she had to fulfill one of Rue's request. She had to win. If she didn't Rue's death wouldn't be as significant. Now, Katniss became determined. And when she and Peeta were the last tributes standing, she couldn't go home alone. So she handed Peeta a handful of poisonous berries called Nightlock. If both Peeta and her couldn't be victors, then no one would. She and Peeta were going to commit a double-suicide. But they didn't get to. Claudius Templesmith told them to stop. Then he announced that they were the victors of the 74th annual Hunger Games. The crowd saw Katniss show up the Capitol. President Snow didn't like this. He knew there was going to be an uprising.
In
Catching Fire, he threatens Katniss, telling her to behave, or otherwise lose her loved ones. At first she tries to behave. But after seeing an uprising in District 8, and seeing her best friend Gale Hawthorne be beaten in front of the public, she knows that she hates the Capitol. She knows she hates President Snow. Katniss sparked a revolution. President Snow takes it out on her by reaping her for the Quarter Quell, a special edition of the Hunger Games which occurs every 25 years. Victors have been reaped for this new Hunger Games. Before she steps into the arena, she watches Cinna, her stylist and friend be beaten to death by peacekeepers. The game is full of torture, taking away Mags, an old woman, who was Finnick Odair's (the incredibly handsome victor of the 65th annual Hunger Games ) mentor. In the middle of the Games, the arena is blown up, and Katniss, Beetee( a man tribute from District 3, who won a previous Hunger Games), and Finnick are rescued by a District 13 helicopter. The rest of the tributes are taken away by the Capitol.
In
Mockingjay, there is a rebellion and Katniss is the face of it. She is known as the Mockingjay. She watches television from the Capitol. Peeta is beaten continuously. There is a war. Other tributes are tortured. District 12 has been blown up. Peeta has been whitewashed. District 8 is blown up. A hospital of injured and sick people, including children is set on fire. A portion of District 13 is killed. Finnick is dead. Some soldiers from District 13 are dead. There is no sign off Effie Trinket, her escort. But the worst thing happens. Prim, Katniss's sister, who she loves more than anyone else, is sent by President Coin to the Capitol, where soldiers are shooting each other, and bombing everything. Prim is sent to nurse children, when she herself is 13. Katniss watches Prim in a crowd of Capitol children. She also watches President Snow bomb the pool of children, and kill Prim. Katniss's heart just broke and shattered, and died. All of her loved ones were slipping out of her fingertips. No. They were being forced away.
Another bomb forces the Capitol to surrender. President Snow is taken away by District 13. We are now back to the scene where Katniss has to shoot him to death. But Katniss doesn't. She shoots President Coin, the leader of the rebellion. President Snow may have destroyed her life, her district, her home, Rue, Thresh, tributes, Finnick, Mags, Wiress, Boggs, soldiers, Cinna, Portia, children, the injured, the sick, Bonnie, Twill, beaten Gale, beaten Peeta, tortured Peeta, whitewashed Peeta, but it would never be anything compared to what President Coin did. President Coin sent her little sister, Primrose everdeen, the only she was sure she loved, to her death. That is why she shot President Coin.