Singer is 'safe' but has cancelled her concert in the French city
Singer tweets movement's petition after the likes of Beyoncé, Chance The Rapper and Alicia Keys appeared in a video listing "23 Ways You Could Be Killed If You Are Black in America"
The singers met Megan Flores, a fan battling cancer, in Miami in March
Lana Del Rey, Wiz Khalifa and Disclosure had all been booked to perform at the event
The two got up close and personal during their performance of 'Work'<br />
Song features on the 'Star Trek: Beyond' film soundtrack
She even signed some of the boxes
The video is the first to have been shot entirely on IMAX cameras
It's called 'Sledgehammer' and it's rumoured to have been written by Sia
Titled 'Sledgehammer', the track is due to premiere tomorrow (June 26)