apocalyptic dream

apocalyptic dream from the 2008 election, I had this dream at the beginning of the election in 2008 and have never been able to let go of it so decided to seek the opinions of others this is my first post so please be kind.

The dream starts in an airport where people are running from a man claiming to be the anti-christ I saw him and he strongly resembled president Obama all though it this point in the the presidential race had just began and to the best of my knowledge I had never seen Obama before, and I am not saying it was him simply saying he looked alot like him. Anyway after the airport I find myself in an apartment with several people one particularly strong man and what can only be described as zombies flooding the apartment but the strong man is able to punch them hard enough and drop them. Eventually that man is killed and I am forced out of the window. At this point I duck into the sewer attempting to make my way to my house and grab my shotgun as I am running my light dies it gets very loud and the dream ends. What I find most unsettling about this dream besides the overall nature of it was the fact that I woke up several times in the middle of this dream but fell back asleep and went right back into it, which has never happened to me before. The dream also continued for 3 nights which means there is probably alot that I dont recall. I have been interested in the possibility of an apocalypse and have read about what ifs and researched it so it is totally random but still have had a hard time letting go of this dream, any thoughts or similar dreams?