RE: Bug Bunny.
I have a laserdisc collection of Loony Tunes cartoons made in the 40's.
One "Bugs Nips the Nips" bugs sets up a ice cream shop on a Island to sell hand grenades disguised as ice cream bars to buck toothed, thick glasses wearing Japaneese.
And others that feature drunk storks or my favorite drunk witch "broomhilda"
I think they have two version of that collection now on DVD..a parsed down version suitable for most library's children section and a uncensored collection.
Even Disney has gone through and removed Cigarettes from some of it's cartoons like Pecos Bill. (who in the original was always smoking or rolling a cigarette).
Edit: Here's a link about Pecos Bill: