Here's Jo Cox's husband's reaction to Trump's retweets:
It's not really accurate to claim that Britain First were "responsible" for Jo Cox's murder. The atmosphere around the run-up to the Brexit referendum (and after) was (and has been) quite poisonous, and rhetoric from the likes of Nigel Farage and talk of "traitors" from assorted rightwingers and rags like the
Mail and
Express along with the murderer's online searches (I can't recall any mention of Britain First in those; and because of what he shouted, it will definitely have been looked for) were probably more directly responsible.
Britain First took a lot of heat for it at the time, but they're not a very significant player in terms of numbers in the UK, either in real life nor online (they have quite a few rivals on the UK hard right) - they just caught the eye of Coulter, then the loose-stubby-fingered manchild who infests the Oval Office. It must be horrible for Brendan Cox (a remarkable and very brave guy) every time he hears those two words used together, though.
Britain First have also caught out some would-be elected officials in the UK:
Conservative council candidate sorry after sharing Britain First posts
A council candidate has apologised for sharing social media posts from far-right political party Britain First.
Conservative candidate Ron McKail is standing in the Westhill ward, where he hopes to keep the seat he has held since 2012.
But he has come under fire from opponents after he was found to have been sharing Britain First and English Defence League (EDL) posts about the military.
Mr McKail said: This was naive of me but I am not that savvy with social media and I didnt realise the source.
https://www.eveningexpress.co.uk/fp/news/local/council-candidate-sorry-after-sharing-britain-first-posts/
As you can see, retweeting them or sharing a post of theirs on Facebook can pretty much disqualify you from even minor public office in the UK.
Just saying.