From climate change to capitalism run amok, street artist Blu (previously) pulls no punches in his soaring multi-story murals on the streets of Italy. While mixed with a healthy dose of sarcasm and humor, the inspiration behind each artwork is anything but funny as he translates searing critiques into aesthetically beautiful paintings. For instance a 2016 piece criticizing housing problems in the Celadina district of Bergamo, Italy depicts cramped residents as a brightly hued rainbow but leaves a small group of authorities in the lower right completely devoid of color. Collected here is a selection of murals from the last year, you can see more detailed shots by flipping through his blog. You can also get an idea of how he works—perched on a tiny suspended seat—in this short GIF.