AIBU to think that if you attended the Unite the Kingdom rally and/or displayed English flags because Tommy Robinson told you to- the racists in the linked video are your people and you are either a racist or complicit with racism.
A black YouTuber went in disguise to the rally and had no difficulties finding racists happy to openly air their views:
My husband often hears similar comments to those in the video from ordinary local white people who feel comfortable and mistake him as one of them, but don’t realise he’s married to a brown person.
Just because you agree with the views of a racist organisation or cause on a single issue, does not make it ok to join that racist organisation or cause. In the same way believing in a free Palestine does not make it ok to join Hamas.’ Dissatisfaction with post WW1 reparations and sanctions did not make it ok for Germans to endorse the Nazi party. Anger about economic policies does not make it ok for Americans to vote Trump. If you want to join those causes over a single issue, you should admit that you are in fact a terrorist/ racist/ xenophobic.
YABU- it’s unfair to call someone racist just because they have marched with Tommy Robinson or hung flags in support of his movement
YANBU- you cannot support a racist/xenophobic movement without actually being racist/ xenophobic