Hong Kong’s protesters traded in their umbrellas for laser pointers on Wednesday night, making a point of their own by failing to start a fire.

During the anti-extradition protests that have rocked Hong Kong over the past nine weeks, demonstrators have taken to using laser pointers to obscure the vision of police officers and surveillance cameras.

These lasers Hong Kong protesters are pointing at riot police through billowing tear gas, it's like something out of a sci-fi movie. #AntiELAB pic.twitter.com/noTllDuc09 — Alejandro Alvarez (@aletweetsnews) July 28, 2019

On Tuesday night, Keith Fong, the president of Hong Kong’s Baptist University Student Union, was arrested for possession of “offensive weapons” after buying 10 laser pointers. He claimed that they were for a bit of astronomy.

At a press conference the following day, police demonstrated the alleged dangers of the gadgets, which they referred to as “laser guns,” by shining one of the pens that Fong had purchased at a piece of paper, causing it to start smoking.

The demonstration was scorned by protesters who organized a group stargazing rally at the Hong Kong Space Museum by Victoria Harbour in Tsim Sha Tsui.

At the rally, hundreds of people shone laser pointers at the sky, as well as at trees and pieces of paper, expressing their mock annoyance when nothing burst into flames, shouting out that they wanted their money back.

Hahahahaha people taped a page from Ta Kung Pao, the Communist Party-financed newspaper, onto the outside wall of the Space Museum, and tried to set it on fire with laser pointers. They failed. (via Telegram) pic.twitter.com/h4XhCCPf5I — Mary Hui (@maryhui) August 7, 2019

Hundreds of HKers, armed with laser pointers, turn up at TST for “star gazing.” They say if the common tool for amateur astronomers is as dangerous as the police says, they should be able to light the tree on fire. They’ve been at it for more than half an hour. pic.twitter.com/fIPczSu2Yo — Wei Du 杜唯 (@WeiDuCNA) August 7, 2019

People outside the Space Museum shone their laser pointers at nearby buildings and started singing a canto pop song called "In Lazer" 🤷🏻‍♂️ #antielab pic.twitter.com/nMupOsxKsa — Lok. (@sumlokkei) August 7, 2019

Several hundred people have gathered at #TsimShaTsui harbourfront to join a “stargazing” event – to use their laser pointers to show solidarity with a BU student arrested for carrying 10 pointers ytd. Many asked “why is there no fire?” “Refund!” #HongKongProtests pic.twitter.com/LZcRZ8Phzb — Frances Sit (@frances_sit) August 7, 2019

Protest against the arrest of HKBU student union leader who bought laser pointers at TST now. Police said laser pointers are offensive weapons – protesters are chanting “Catch fire!” (From Telegram) pic.twitter.com/nZhuCY6kuT — Grace Tsoi (@gracehw) August 7, 2019