Original: As a caricaturist, Castelao focussed on the everyday in a humorous way, although after experiencing the Spanish Civil War, he turned to using his art to denounce the cruelties of Fascism in a collection of paintings.
Simplified: As a caricaturist, Castelao focussed on the everyday in a humorous way, although after the cruelty and tragedy of the Spanish Civil War, he turned to using his art to denounce the misery of Fascism.