Conversation so far:
What is significant about Manu Chao and his interview with the University of Southern California?
Manu Chao expressed his opinions about topics such as the effects of economic globalization on social inequality. He explained how he believes that the global market is causing social inequality.
How did people react to Manu Chao's opinion of economic globalization?
Are there any other interesting aspects about Manu Chao and his interview with the University of Southern California besides expressing his opinions about topics such as the effects of economic globalization on social inequality?
Interviewing by University of Southern California, Manu Chao expressed a worry that mafias are the greatest threat to democracy; this is already evident in certain places, like Russia and Mexico.

Question: What is a reason he is for legalizing marijuana?
Self-contained rewrite: What is a Manu Chao's reasoning for legalizing marijuana?