What are ingredients for a civil war?

It can be based on economics. The Civil War was fought over slavery which was the primary source of income for the South. Inner turmoil within Germany thanks to the Great Depression allowed the Third Reich to raise to power.

An armed and angry minority who hate their opponents more than they love democracy.

People+guns.

Taking away roadhogs hook combo because of crybabies

Idiots who believe Even Bigger Idiots!

Captain America and Iron Man

The divide and conquer that's been bred over society for so many years. Especially the dividing of race and gender.

Many things, but I think mostly failing government.

its top secret from important enemy that controls it