AB said that it's a cultural misunderstanding. If so, then if there is independent proof that Harbhajan said monkey in India without understanding, then was "enlightened" by Symonds or others yet said it again, then he should be suspended.
If Hogg can be independently proved to have known just how offensive the b word was to the Indians, yet still used it - then Hogg should also be suspended.
If not on either or both of these, then either or both should be warned or just given a suspended sentence.
