Class is about relation to the Means of Production, not simple wealth. The US is largely made up of labor aristocracy who benefit from Imperialism, like you pointed out, but aren't bourgeoisie.
Secondly, putting people to death isn't the goal, changing property relations is. Adventurism is cool to see, but doesn't actually change anything.
My problem with this is, who gets to decide where bourgeoisie start and ends. Because for the majority of the world, the average American is a selfish bourgeois with a big house and two cars, who thinks oppression is when the gas price rise. Kill all the bourgeois fine, but who gets to decide who lives and who dies?
edit: jeez americans, we dont have to agree on everything and downvote to hell just because someone says something we dont like. Maybe in the US shooting people you dont like seems like a resonable solution, but I'm sorry it's not that simple in the rest of the world.
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