"Millions of Americans in key battleground states were separated into eight categories, so they could be targeted with tailored ads online.

One of the categories was named ‘Deterrence’, which was later described publicly by Trump’s chief data scientist as containing people the campaign “hope don’t show up to vote”.

In total, 3.5 million Black Americans were marked ‘Deterrence’.

Overall, people of colour labelled as Black, Hispanic, Asian and ‘Other’ groups made up 54% of the ‘Deterrence’ category. Meanwhile, categories of voters the campaign wished to attract were overwhelmingly white."