What are some persuasive historical fine art paintings?

Question:Do you guys know if there are paintings that can switch people's perspective of something or evoke something that makes you go "oh, that's true"...???

Thanks guys!

Best Answer - Chosen by Asker: Do you guys know if there are paintings that can switch people's perspective of something or evoke something that makes you go "oh, that's true"...???

Thanks guys!

goya's third of may and other paintings/ prints about war
kollwitz works about poverty

'Slave ship' by JMW Turner. Powerful. Very powerful.