Congress called executives from major social media companies up to Capitol Hill last week in the latest in the ongoing clash over Russian attempts to influence American elections. The Russian propaganda campaign was widespread and malicious — and likely had less to do with the results on Election Day than the weather.

Various Russian-sponsored organs have engaged in propaganda efforts in the United States, from the officially-sponsored RT, or Russia Today, English-language TV network with a large online presence, to fake Twitter personalities and Facebook pages.