FUCK. For those who don't know, Cabu is one of the most important satirical cartoonist in France. He was the most peaceful guy you could meet. Fuck them 

I don't have words strong enough

also, here's the last twitter pic from Charlie Hebdo: 

https://pbs.twimg.com/media/B6vY6mDIAAEI5k1.jpg:large

"cheers"