NPR has no doubt gotten a deluge of negative comments about firing Juan Williams, but I’m guessing from the tone discussed in this Washington Post article that much of it was ginned up by Fox News and other conservative media outlets. Those outraged people were not likely to be donors to NPR in any case, and probably don’t even listen to it. They get their marching orders from Fox, Rush and Sarah Palin.
The cutoff of Federal funding may be more problematic, but it was likely to come anyway if the Republicans win majorities in November. If they are willing to cut funding for Social Security, they are certainly willing to cut funding for NPR, Juan or no Juan.