Vintage photos show American life under Trump's tariff hero, William McKinley

The turn of the century saw a rise in labor movements as industry grew largely unregulated.

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• Trump has credited a 19th-century US president for inspiring his aggressive approach to tariffs.
• William McKinley came to power during a time of economic instability and inequality.
• During his political career, McKinley authored the most protectionist tariff act in US history.

President Donald Trump's sweeping tariffs have become a defining feature of his second term...