According to YouTube this video was created by a 22 year old man named Brian. He has a blog where he reviews video games, normally "first person shooters" like Killzone and Resistance.
I can not find any information on this "Brian" to determine his politcal leanings, but we can be sure he isn't very fond of Michelle Bachmann.
Do you think the Secret Service is going to pay "Brian" a visit like they did the 7th grader that made the harmless comment on his Facebook page about Obama?
I don't think so either.
So is this the case of a stupid individual making a harmless video out of a game or a Death Threat against Michelle Bachmann?