You Know Nothing - Call of Duty: Infinite Warfare

Kill Kotch before his speech ends - 30

Mission - Operation Black Flag: Trap is Sprung

Continue through the mission as normal, you will come to the point where you need to hack into a robot and attempt to kill Admiral Kotch. You will fail, but you will injure him, you can then run onto the Bridge and stab Admiral Kotch. You need to stab and kill him before he finishes his end speech. You don't have much timing on this, you need to be quick.

This is a reference to Jon Snow from Game of Thrones. The character Ygritte says multiple times, "You Know Nothing, Jon Snow". Admiral Kotch is played by Kit Harington, who also plays Jon Snow in the Game of Thrones Series. This has also become a meme in the community.

"You know nothing, Jon Snow." Meme