It seems that you can't release a Call of Duty game without controversy. Modern Warfare 2 featured the infamous "No Russians" level where players can kill civilians with a terrorist group. Call of Duty: Black Ops features a scene that has angered the government of the nation of Cuba.
In the first level of the game (Spoiler!), the player takes part in the Bay of Pigs invasion, that culminates in an attempt to assassinate Fidel Castro, the president of Cuba. As you could probably understand, the political murder of a head of state has angered Cuba. Here's the official word from the Cuban media, a wholly owned subsidiary of the Cuban state:
"What the United States couldn't accomplish in more than 50 years, they are now trying to do virtually," said an article posted on Cubadebate, a state-run news website. "This new video game is doubly perverse. On the one hand, it glorifies the illegal assassination attempts the United States government planned against the Cuban leader ... and on the other, it stimulates sociopathic attitudes in North American children and adolescents."
While I seriously doubt anyone's "sociopathic attitudes" are going to be stimulated by a video game, I think Cuba's reaction is understandable. Imagine how incensed Americans would be if a game came out that featured the assignation of a respected leader? How would we like it if there was a "murder-Reagan" level in a widely available game?
The United States did actually try to kill Castro back in the day. According to some accounts, Castro has survived more than 600 assassination attempts since he seized power in the late 1950s, including CIA poisoning attempts from milk, a pen and his cigar, as well as a gun hidden in a camera.
"I think I hold the dubious record of having been the target of more assassination attempts than any politician, in any country, in any era," Castro, who is still the head of the Communist Party in Cuba, said in a July 1998 speech. "The day I die, nobody will believe it."
...Unless, of course, the CIA was successful, and the Casto we know today is actually a double...