https://www.mediamatters.org/blog/2018/01/26/russian-trolls-moved-340000-americans-ladder-engagement/219183
"Last night, The Washington Post revealed that Russian trolls “got tens of thousands of Americans to RSVP” to local political events on Facebook. We’ve known since last September that Russian trolls employed this tactic and often created dueling events at the same location and time, probably to incite violence or increase tension within local communities. But it is only now we’re learning the scale of that engagement. Per the Post, “Russian operatives used Facebook to publicize 129 phony event announcements during the 2016 presidential campaign, drawing the attention of nearly 340,000 users -- many of whom said they were planning to attend"."