Yes, "The Hunger Games: Mockingjay - Part 1" and "Part 2" were filmed back-to-back. This decision was made to maintain continuity in production and to streamline the filming process for the final installments of the franchise. The two films were based on the final book of Suzanne Collins' trilogy, and the split allowed for a more detailed exploration of the story's themes and characters. Filming took place primarily in 2013, with both parts released in 2014 and 2015, respectively.

"The Hunger Games: Mockingjay" was split into two movies to adapt the final book of Suzanne Collins' trilogy more thoroughly. This decision allowed filmmakers to explore the story's complexities, character developments, and themes in greater detail, providing a richer narrative experience. The strategy also aimed to maximize box office revenue, as the first two installments had been very successful. By dividing the concluding story into two parts, the filmmakers could delve deeper into the political and emotional stakes of the series' climax.

In "The Hunger Games: Mockingjay - Part 1," one of the most famous lines is "If we burn, you burn with us." This line is spoken by Katniss Everdeen, symbolizing her defiance against the oppressive Capitol and her determination to fight for freedom. It captures the spirit of rebellion that permeates the film and emphasizes the idea that the struggle for liberation affects everyone, not just the rebels. This moment highlights Katniss's evolution from a pawn in the Games to a fierce symbol of resistance.

The third movie in "The Hunger Games" series is "The Hunger Games: Mockingjay - Part 1," released in 2014. It is based on the first half of the final book, "Mockingjay," by Suzanne Collins. The film follows Katniss Everdeen, who becomes the symbol of the rebellion against the oppressive Capitol. After surviving the Hunger Games, she is relocated to District 13, where she joins the fight against President Snow and the Capitol's tyranny. The film explores themes of propaganda, sacrifice, and the impact of war.