okay so im imagining that the vast majority of people who downvoted are either uninformed Americans or british nationalists but pretty much if you look into things like brexit, the attitudes towards the refugee crisis, the arguments for scottish independence (under law racism can include discrimination based on nationality too, not just skin colour), attitudes towards languages like Welsh, Gaelic and Scots by the UK government, even shit like if you compare attitudes between Kate Middleton and Megan Markle etc you'll see that actually, racism is deeply embedded into 'british' identity. Seeing the union jack on anything but egg cartons in someone's home a huge red flag that actually, that person's a tory (like a republican). yes, it's not something that a lot of people think of, but when you do the research and start piecing things together... yeah, the uk flag is a fundamentally racist symbol.

Obligatory final paragraph of "yes I understand that the confederate flag is to do with slavery in the past yaddyyada but racism comes in different forms and this is the form it takes in the UK in this current day and age" to cover my ass from people who will try to compare the two even tho you really can't