While he wasn't directly involved in the overthrow of the Spanish government by Napoleon, Goya's art vividly reflected the turmoil and upheaval of that time.
The painting you're likely referring to is "The Third of May 1808" (also known as "The Execution of the Defenders of Madrid"). This iconic work depicts the brutal execution of Spanish civilians by French troops following the Dos de Mayo Uprising, a resistance movement against Napoleon's occupation.
Goya's painting is a powerful testament to the suffering inflicted by Napoleon's regime and the bravery of those who fought against it. It's a stark and emotional portrayal of the horrors of war and the tragedy of political oppression.