This is especially important for politicized race-obsessed American media. This man is British with mixed race parents, however, it's vitally important the media depict the man as "white supremacist" even while they contrive new races to maintain their racial insistence, "White-Hispanic" brand spanking shining neologism (itself dependent upon a contrived and objectionable ethnonym) applied to Zimmerman. It was important the tales be told and repeated just so.
At this point it can be safely assumed American media is lying to you, and for the best of reasoning they can muster. Here, the Daily Mail did not do what all American media did do.