https://www.siliconvalley.com/2021/12/03/facebook-sold-ads-comparing-covid-19-vaccine-to-holocaust/

Facebook has sold ads promoting anti-vaccine messages, comparing the US government’s response to Covid-19 to Nazi Germany, casting doubt on the result of the 2020 election, and even pushing political violence.

The ads have been run by merchandise companies that have spent hundreds of thousands of dollars on Facebook over the last few years.