From the perspective of where I live (Eastern Europe):
"Black lives matter" - We have very few black people living here. And very few problems with police in general. When something bad happens it typically happens to the police, not by the police.
"Racism" - we have no history of slavery nor racism, except being subjected to it. Even more - originally the word "slave" was derived from the word "slav".
"Sexism in tech" - there is no sexism in tech here. Tech is not even a prestigious field. People want to work in law, medicine and finance. Some can even be quite ashamed to admit they work in a technical field.
"Transphobia" - even such things as thinking about "sex" and "gender" as different concepts are quite US specific. i.e. where I live we typically refer to people by their sex, and don't even have a term for a separate concept like gender.
Yet these things are so pervasive on the internet. People even post their pronouns on twitter and (in this case) fill their GitHub profiles with that stuff. They can do it of course, it might even be a good thing to do. But I do not think this deserves a front page of HN. Hence why I am glad it was flagged.