Although initially trained as a doctor, Lu Xun came to believe that the plight of the Chinese masses could be improved only through the widespread dissemination of socially aware art and literature. In the woodblock print, especially as developed by the German Expressionists, Lu Xun saw an effective tool for exposing the social ills of China. Artists influenced by Lu Xun focused on the inequities suffered by the lower classes. Due in part to this redirection in subject matter, the woodcut medium was perceived to be Western and modern although woodblock printing had been invented in China and had been widely used since the Tang dynasty.

What is the weapon of protest associated with Lu Xun in the woodcut portrait on the right?