There are white supremacists going on public record as saying Archie needs to be killed because biracial children are an abomination.
Two members of a Neo Nazi terrorist organisation are in prison for planning to kill Harry for being a race traitor.
Someone sent Meghan white powder with a death threat, that caused the office to be evacuated for fear it was anthrax.
There are hundreds, possibly thousands of comments online calling Meghan and her children racial slurs and throwing racial hate at them, including calling for them to be killed.
There were hundreds of Meghan hate threads here, mainly before and right after the wedding, including many that were deleted for racism.
When a black Mumsnetter asked for a Black Mumsnetter section, some Mumsnetters were so enraged that black people had the audacity to want a place to chat they stalked and doxed her offboard, abused her non-stop, and even photoshopped fake DMs to try to get her kicked off this forum.
During the engagement a racist cartoon of Meghan as an ape chained up in a zoo throwing her own excrement at the Queen trended on Twitter.
Racism kills. When George Floyd was suffocated in cold blood, there were threads here calling him scum and a criminal and acting like he deserved to be held down on a filthy pavement and murdered in cold blood.
When the BLM protests happened in London, there were threads here calling the protestors "thugs", "animals" and "criminals." (Yet when the far right counter protest happened, those same posters were screeching their heads off about free speech and saying stuff like "I don't agree with Neo Nazis but I defend to the death their right to express their opinion because free speech is important.")
When Ahmaud Arbery was hunted down like an animal and murdered in cold blood, there were threads here repeating the rumours that there'd been a burglary in the area and saying the murderers' "fear" of Arbery was understandable and justified, making out that if a crime is committed in your area, it's perfectly acceptable to go out and murder all the black people you see.
Joking about killing or physically endangering biracial kids is all part of a racist society that defends racist violence. The fact people are defending a racist joke (while losing their shit about people making valid points saying "you wouldn't be defending this if it was Louis") says everything about how kids who aren't white aren't seen as human beings, and about how Mumsnet has a very serious problem with racism.