the battle over misinformation and the vaccine has become a pressure point in this country, and tonight nbc news has exclusive reporting on what anti-vaccine advocates are doing to evade social media bans. here is vicky nguyen reporter: tonight anti-vaccine groups are trying to stop facebook from removing their posts by using code words and fake profile names related to dance, like in these posts. dancing folks are vaccinated people. vaccine is hokeypokey or beer. while facebook says it s working hard to fight misinformation, removing 18 million covid falsehoods so tougher, which could impact people like sisters nara and hannah al hajj, who get their information from social media and other sources and don t agree on the vaccine. i am a bit skeptical.