Over four million people that live in countries where being gay is illegal have been labelled by Facebook as being interested in homosexuality
Source:
https://www.newscientist.com/article/2214309-facebooks-ad-data-may-put-millions-of-gay-people-at-risk/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home