Grammy Award winning band, bowed at no. 1 on Billboard's Top 200 chart
for their hugely innovative, platinum selling record "Toxicity" in
2001; System of a Down released not 1 but 2 records in 2005,
"Mesmerize" and "Hypnotize", and, remarkably, both records became
number 1
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Songs often talk about political corruption and injustices in society