The document summarizes the 1990 London Tax Riots in the United Kingdom that began as peaceful protests against a new tax law but escalated into violence and riots. Over 200,000 people initially participated in peaceful marches in London and other cities to protest tax increases. However, as the weather improved more people joined in London and the protest turned violent at Trafalgar Square with riots, looting, and 340 arrests made as tensions rose with police. The tax riots ultimately contributed to the fall of Prime Minister Margaret Thatcher from power.