Linkin Park – Burn It Down lyrics

I think it's a song about the futility of putting people up on a pedestal. It alludes to putting all of our faith in some kind of leader (though it could also pertain to a loved one). We build them up and pour our hope into them, but in the end, they're human and flawed. They fail us, they let us down. And in that moment of betrayal, we turn on them. Demonize them (so when you fall, i'll take my turn, fan the flame as your blazes burn).

I still believe that this song is largely centered around society's cycle of war and peace. How we build our societies, technologies, and everything that we could possibly want, only to then break it down later with a catastrophic war. I also always perceive the line "We can't wait to burn it to the ground" as showcasing the fact that much of humanity relies on the military-industrial complex, and as such, we are absolutely eager to instigate new conflicts and get ourselves into war again to stimulate our own gains, despite the fact that we're actually killing people and destroying progress elsewhere in the process.
I also think it's important to take Mike's verse into play. He said "I played soldier, you played king," which I think displays how we, as humans in need of law and order, directly influence who are in our seats of power. Yet, these leaders, who are sworn in with the duty of protecting us and our progress, seem to instigate conflicts and put our society in even greater danger. I think this disappointment is easily displayed when Mike says, "I built you up, but you let me down." Furthermore, when he says "So when you fall, I'll take my turn // and fan the flames as your blazes burn" shows how we tend to overcome bad leaders that have taken power in the past, written them down in history as such, and continued with our own progress and redeveloped our societies.
And though we do this, one single thing remains clear: we are a violent species, and will continue to be so for as long as we live. Thus, it is only logical that of all the things we can certainly bring with us as societies climb and crumble, the very first thing we shall take is war.

Being married to the wrong person. You told me yes, you held me high and I beleaved when you told that lie (i love you or I do).
It is about a person loving someone and that someone pretty much killed the relationship. Like how can someone do that to a person that loves them so much and wants to be with them and only them for the rest of their lives.
We always build it back up (with a new relationship and someone always)burns it back down.
Its human nature.
By the way I love this song!

The singer appears to be speaking to two rulers- a present day ruler/deceiver/fallen angel, and the coming king who brings the fire which the singer welcomes. The fire is prepared for the present ruler and his corrupt kingdom who is told that his game of charades and fooling the people is almost over, his time is short and an all consuming fire is coming to lay waste to him and his corrupt ways.

Ummm tbh I'm not really sure, but I think. Think. It has something to do with the world and what it is now. We see all these things around us becoming big and great. We are proud of what we have created, but everything that goes up, must come back down again. And when that time comes, our loved ones will be there for us, helping us through it. . I think. Which includes wars and such. Yeah. I'm not sure.