The survivors of the Parkland school shooting have been given clear backpacks as part of the school's new security measures.

17 people were killed when Nikolas Cruz opened fire on Marjory Stoneman Douglas High School in February. Since then, shooting survivors including students Lauren Hogg, David Hogg, Cameron Kasky, and Delaney Tarr, have been calling for the introduction of stricter gun control legislation. The students returned to school this week to discover that everybody in their school had been issued with clear backpacks as part of the school's new security measures. These measures also include mandatory student IDs and an increase of police on school grounds. Many of the students took to Twitter to share pictures of their new backpacks, saying that their introduction wasn't going to "do anything." https://twitter.com/Alfonso_Cal/status/981196976413954049 Another student argued that the backpacks and the IDs were an "illusion of security." https://twitter.com/longlivekcx/status/980804811913355264 Student David Hogg also retweeted a tweet saying that if students had to wear clear backpacks, "so too should Congress." https://twitter.com/JordanUhl/status/981272204947140609 And others said that the backpacks were an "invasion of privacy." https://twitter.com/delaneytarr/status/980806714743296002 https://twitter.com/lauren_hoggs/status/980812862162657281 https://twitter.com/delaneytarr/status/981005115623657472 https://twitter.com/cameron_kasky/status/981136553899626496 Nikolas Cruz was arrested shortly after the shooting and charged with 17 counts of premeditated murder. A 'not guilty' plea was entered on his behalf.