Complex sentence: Trump's sharing of the tweets was praised across far-right circles by "islamophobes, white supremacists and other extremists", it increased Islamophobic comment on social media and elevated the profile of Britain First, considered a tiny fringe group.
Split into simpler sentences: Trump's sharing of the tweets was praised across far-right circles by "islamophobes, white supremacists and other extremists". It increased Islamophobic comment on social media and elevated the profile of Britain First, considered a tiny fringe group.