Usually after when President Obama was elected an african-american male or female had a new sense of boldness; if you are a white male or female they tended to "get in your face" because they now have a black man in the White House. Also they have a disposition that their man Obama is the best president in the history of the United States and if a non-black person said anything negative about Obama they are automatically a racist that has a problem with a black president in office.
An example of a nigger with Obamanitis
"Man Obama sucks I cant wait till his term is up"
"Yo dont be hatin' on my president he's got to clean up after Bush"