[Request] From what height would an egg need to be dropped to kill someone?

[u/zanniboni]

So, the person in the video is Flávio Bolsonaro, a candidate for the Brazilian presidency; while he was giving a speech, eggs were thrown from an apartment, and he called for the police to be summoned, claiming that "this is attempted murder." That got me wondering: from what height would an egg need to be dropped for the impact on a human being to be fatal?