17 people were killed in Northern Ireland during the Troubles by "rubber bullets" so they are quite capable of killing people:
https://cain.ulster.ac.uk/issues/violence/rubberplasticbulle...
https://cain.ulster.ac.uk/issues/violence/rubberplasticbulle...
Just wanted to "[point] out some consideration that hadn't previously been mentioned" and "[give a tiny bit] more information about the topic" (https://news.ycombinator.com/newswelcome.) :/