For a more detailed argument see for instance this article:
http://www.hoodedutilitarian.com/2015/01/in-the-wake-of-char...
Someone calling racism this:
"Even in a fresh-off-the-press, glowing BBC profile of Charb, Hebdo’s murdered editor, he comes across as a racist asshole.
Charb had strongly defended Charlie Hebdo’s cartoons featuring the Prophet Muhammad.
“Muhammad isn’t sacred to me,” he told the Associated Press in 2012, after the magazine’s offices had been fire-bombed.
“I don’t blame Muslims for not laughing at our drawings. I live under French law. I don’t live under Koranic law.” "
is someone that doesn't know anything about racism
And the "welfare queens" quote is really funny
I'm guessing you didn't really check carefully. They do mock Islam (and Judaism), and also publish flat-out racist cartoons. They're not mutually exclusive. They publish a lot of offensive cartoons, like the one linked to by the OP depicting Boko Haram sex slaves as welfare queens. They should be free to do that without getting murdered by fanatics.
Then it will be easy to provide proof of that, isn't?
And now you will say that when they parody the rural French they are also racists.
Perhaps also you will find racist the caricature of Le Pen as a pig
Yes, I see what they are doing. It's actually very common to use racist stereotypes in parody and satire. It's also still totally racist to draw huge nosed Jews (and huge-lipped black people). Drawing huge-nosed Jews in the context of criticizing Jews might be parody, but it's not some subtle ironic parody of right-wing ignorance, it's just a crass racist joke.
Everything is racist in some minds even if the people drawing those pictures are part of Non Racist organisations.