Before ATRL panics about the recent meteorites in Cuba in Japan it's just confirmation bias. This happens non-stop, but:
1) one big well documented event because Russians have car/phone cams and can post video to the internet
2) people start looking for events (more cameras pointed at sky/active)
3) More videos posted, commented on, which snowballs into collections of recent videos, essentially documenting otherwise normal activity
That, or that or aliens are attacking and they sent that big asteroid as a signal to begin the meteorite assault. Maybe we're being invaded by an alien species the size of ants (but humanoid looking) and those were their massive transport ships covered in some sort of ablative armor that broke off, and now they have vessels scattered across the planet.