The terrorist attack on the Paris offices of satirical French magazine Charlie Hebdo has shocked the world.

On Wednesday, 10 Charlie Hebdo staff and two police officers were brutally gunned down in what appears to be an extremist response to the magazine’s regular publication of cartoons depicting the prophet Mohammad and mocking religious fundamentalism.

Artists the world over, including Banksy, have been quick to express their grief and outrage at this most violent affront to the freedom of the press and freedom of speech, uniting in solidarity with the journalists and cartoonists of Charlie Hebdo.

Here are some of the best:

*The caption in the cartoon below translates as: “Oh no, not them”.

#CharlieHebdo pic.twitter.com/GNh2ZAEArf — Tommy dessine (@Tommydessine) January 7, 2015

Can’t sleep tonight, thoughts with my French cartooning colleagues, their families and loved ones #CharlieHebdo pic.twitter.com/LqIMRCHPgK — David Pope (@davpope) January 7, 2015

I am devastated by what just happened in France. #CharlieHebdo pic.twitter.com/IxEbScqYFh — jean jullien (@jean_jullien) January 7, 2015

A terrible day for all cartoonists. #JeSuisCharlie pic.twitter.com/Ksbl89WLsE — Magnus Shaw (@TheMagnusShaw) January 7, 2015

#CharlieHebdo pic.twitter.com/15O4YC2KWg — Ruben L. Oppenheimer (@RLOppenheimer) January 7, 2015

‘Even if they kill 10 of us, the newspaper will go out next week’ #CharlieHebdo — Mashable News (@MashableNews) January 8, 2015

7 janvier 2015 / January 7, 2015 #CharlieHebdo pic.twitter.com/Bs6LpzeZGl — Loïc Sécheresse (@loicsecheresse) January 7, 2015

The Pen is mightier than the sword. #JeSuisCharlie #CharlieHebdo pic.twitter.com/CYPKjzd0XB — Bipartisan Report (@Bipartisanism) January 8, 2015

Charlie Hebdo. Nooit opzij. pic.twitter.com/MJwGKPQ8jU — Joep Bertrams (@joepbertrams) January 7, 2015

Horrible attack.Cartoonists across the world are uniting against bloodshed and violence. @ibnlive @cnnbrk pic.twitter.com/QtTe9INeU9 — Neelabh Banerjee (@NeelabhToons) January 7, 2015