Because he’s a black man portraying a personality who’s white within the Harry Potter novels, actor Paapa Essiedu receives hate feedback and even dying threats. But, he says: “The insults drive me on.”
https://www.spiegel.de/kultur/tv/harry-potter-serie-paapa-essiedu-berichtet-von-morddrohungen-wegen-rolle-als-severus-snape-a-40a9b77d-e53b-48cd-8e1c-0d994c9e0751#ref=rss