these angry parents disrupting a louisiana school board meeting over masks in schools. it comes after the president announced he was giving the education secretary authority to take legal action against governors banning mask mandates. intimidation and threats we re seeing across the country are wrong. they re unacceptable. i ve said before, this isn t about politics. it s about keeping our children safe. reporter: overnight, the nation s fourth largest school district, miami-dade county, instituting masks for students when classes begin, defying an order by governor ron desantis. another florida district, where more than 10,000 students and staff, nearly 5% are already in quarantine or isolation, voting in favor of masks, too. i just think personal choice ends when public health begins. reporter: and johnson & johnson says they are engaging with the fda and the cdc about a booster shot. the company plans on sharing data soon, but says there is one study that suggests that thei