Hashtag unites public on social media after Westminster attack
![Social media users posted this picture, with the TFL Underground logo, along with their messages. Picture: Twitter.](https://www.portsmouth.co.uk/webimg/legacy_oak_92778562.jpg?crop=3:2,smart&width=640&quality=65&enable=upscale)
![Social media users posted this picture, with the TFL Underground logo, along with their messages. Picture: Twitter.](/img/placeholder.png)
Messages of solidarity and defiance were shared on social media after the terrorist attack at the Houses of Parliament.
Using the hashtag #WeAreNotAfraid users of Facebook, Twitter, and Instagram used their accounts to show support.
This came as four people, including members of the public and PC Keith Palmer, were killed.