Members of House Intelligence Committee released some of the Russian FB ads, as reported in November by Fox News as well as WaPo
They were seen by at least 10 million Americans according to Facebook, many of them bought with rubles. They were bought by the Russia based Internet Research Agency with the intention of influencing people with strong feelings about controversial issues.
Example:
A post sponsored by Facebook group "Williams&Kalvin" says that “Danney Williams, 30, has been trying since at least 1999 to be acknowledged as the out-of-wedlock son of former President Bill Clinton and a black prostitute in Little Rock, Arkansas.”
Target: Facebook users in New York, ages 18 and older
Impressions: 15,453 users
Clicks: 1,471
Ad spend: 1,126.07 rubles, or approximately $19.30 USD
Ad run: Oct. 18-19, 2016