Watch the footage (warning: they are quite explicit) on the source I have linked. The shooter guns them down and then executes them.

The problem is not the amount of people but how much each individual consumes. Getting meat out of your diet is a simple and a small sacrifice. Besides the health benefits there is also the fact that you don’t contribute to the culling of 70 billion animals per year (of which 40% is probably not eaten and thrown in the trash). Not only that but you don’t contribute to the greatest cause of deforestation, antibiotics resistance, decline of biodiversity, water waste, …

Besides the global population is steadily stagnating (Africa is still booming) as a lot of countries see population decline (less than 2 children per woman).