You gotta love the importance of the infra and the huge dependency on everybody playing nice, or better, knowing what they are doing.
Yesterday a tiny little outlet called SUPRO, spol. s r. in the middle of nowhere called Hradiste CZ, who manage AS 47868, blacked out part of the oh so crucial Internet. This was done [for all we know] without any bad intentions but Fast Fingered Freddy did manage to cause a stir in the smooth user experience our beloved browsers are so used to.
As shown here there where a couple of countries suffering of their outdated routers but users of all countries might have traffic passing these.