Here's how easy it is for anyone — including Russian operatives — to target you with ads on Facebook

Three media agencies modeled the cost of using Facebook to reach voters in Wisconsin and Michigan with the intention of swaying their vote. 
The estimates range from as little as $50,000 for issue-focused ads to over $283,000 depending on a number of factors including intensity. 
The agencies used tools that are available — legally — to marketers, politicians, and activists to show that even $100,000 can go a long way on Facebook.
Facebook is currently embroiled in an inve