Inciting War and Chaotic Events

In many a story, there comes a time when the villain or antagonist incites war, riots, fights, or other chaotic events for these reasons: For example, he or she can provoke someone into a terrible state or push him or her into a state that would lead to terrible events.
 * To shatter the bonds of a family or those between the hero and someone he or she loves
 * For sadistic pleasure
 * To tear a nation apart
 * To start a war between two countries or nations
 * To take over a kingdom
 * To put the blame on someone, usually the hero

Noteworthy Examples

 * Rex Pester incites a huge fight, pitting the Pickles family against each other. get his name in the news.
 * Koba guns down Caesar and lies to the apes about his death so he can wage war on the humans.
 * Iago gets Cassio drunk and incites a brawl, shattering the bond between him and Othello.
 * In the original Mighty Joe Young, a band of criminals provoke the titular ape into a beastly rage by getting him drunk and burning his finger, causing Joe to tear down the theater.
 * Mor'du shatters the bond between him and his brothers, causing his kingdom to fall into war.
 * Under Ultron's command, Scarlet Witch provokes the Hulk into a raging tantrum that leads him to almost destroy an entire city.
 * Francis Begbie incites a brawl by smashing a glass over a woman's head for sadistic amusement.
 * Dawn Bellwether, aided by Doug, poisons predators with Night Howler serum to make them go savage, throwing Zootopia into chaos.
 * Kent Mansley lies to General Rogard that the Iron Giant killed Hogarth, starting a chaotic battle.

Quotes
"Humans kill Caesar! Burn ape home! Go get them! Apes must attack human city! Fight back! Come! Fight for Caesar!"

- Koba lying to the apes that humans killed Caesar, leading to a war on the humans.