Rev. 6:3-4 (ESV)
When he opened the second seal, I heard the second living creature say, "Come!"  And out came another horse, bright red. Its rider was permitted to take peace from the earth, so that men should slay one another, and he was given a great sword.
“It’s rider was permitted to take peace from the earth.” A red horse whose rider carries a sword is permitted to take peace from the earth. In the wake of peace rages war, and those who live by the sword die by the sword.
Peace, is a luxury not all are given to enjoy in this world. War is actually the reality for most.