Today Brussels remains on a third day of lockdown as police attempt to stop what they suspect to be a Paris type attack on the city. In an effort to aid police, Belgians tweeted cat pictures to take over the hashtag #BrusselsLockdown, yesterday. Previous Twitter users were using the hashtag to describe police movements, which would have helped terrorists elude capture.
To see some of the tweets check out this BBC link.
To read more about the lockdown check out this NPR link.