sting-ball grenadeってあるが、ゴム弾を充填した”低致死性”の安全な手榴弾を使ってたっぽいニダね

One participant’s hand was severely injured when he tried to pick up a so-called
“sting-ball grenade” used by police to disperse crowds with teargas, a police source told Reuters.
https://www.theguardian.com/world/2019/feb/09/more-violence-in-paris-as-gilet-jaunes-protests-enter-13th-weekend