https://techcrunch.com/2020/10/07/facebook-poll-watching-trump-election-political-ads/

In a blog post Wednesday, Facebook said it will no longer allow content that encourages poll watching that uses “militarized” language or intends to “intimidate, exert control, or display power over election officials or voters.” Facebook credited the update to its platform rules to civil rights experts who it worked with to create the policy.

Facebook Vice President of Content Policy Monika Bickert elaborated on the new rules in a call with reporters, noting that wording would prohibit posts that use words like “army” or “battle” — a choice that appears to take direct aim at the Trump campaign’s effort to recruit an “army for Trump” to watch the polls on election day. Last month, Donald Trump Jr. called for supporters to “enlist now” in an “army for Trump election security operation” in a video that was posted on Facebook and other social platforms.